Question 11 Mark
$100$ thousands $=$ ________ lakh.
AnswerWe know that, $1$ lakh $= 100000$
$= 100 \times 1000$
$= 100$ thousands
View full question & answer→Question 21 Mark
By adding $1$ to the greatest __________ digit number, we get ten lakh.
AnswerWe know that, predecessor is one less than the given number.
$1000000 - 1 = 999999$
So, $999999$ is the greatest 6-digit number.
View full question & answer→Question 31 Mark
The $LCM$ of two numbers is greater than the larger of the numbers.
AnswerSince, $LCM$ of two numbers may be equal to or greater than the larger of the numbers.
View full question & answer→Question 41 Mark
Natural numbers are closed under addition.
AnswerSince, the sum of any two natural numbers is always a natural number.
View full question & answer→Question 51 Mark
$5555 = 5 \times 1000 + 5 \times 100 + 5 \times 10 + 5 \times 1$
AnswerSince, $5 \times 1000 + 5 \times 100 + 5 \times 10 + 5 \times 1 = 5000 + 500 + 50 + 5 = 5555$
View full question & answer→Question 61 Mark
Among kilo, milli and centi, the smallest is centi.
AnswerSince, among kilo, milli and centi, the smallest is milli.
View full question & answer→Question 71 Mark
$LCM$ of two or more numbers is divisible by their $HCF.$
View full question & answer→Question 81 Mark
$786 \times 3 + 786 \times 7 =$ ________
Answer$786 \times 3 + 786 \times 7 = 786 \times (3 + 7) = 786 \times 10 = 7860$
View full question & answer→Question 91 Mark
$400$ is the predecessor of ________.
AnswerWe know that, predecessor of any number is $1$ less than the number.
So, predecessor of $400 = 400 - 1 = 399$
View full question & answer→Question 101 Mark
A number, for which the sum of all its factors is equal to twice the number, is called a __________ number.
AnswerBy definition, a number, for which the sum of all its factors is equal to twice the number, is called perfect number.
View full question & answer→Question 111 Mark
There is a natural number which when added to a natural number, gives the natural number itself.
AnswerThere is no such natural number which when added to a natural number, gives the natural number itself.
View full question & answer→Question 121 Mark
The number $81652318$ will be read as eighty one crore six lakh fifty two thousand three hundred eighteen.
AnswerSince, the number $81652318$ will be read as eight crore sixteen lakh fifty two thousand three hundred eighteen.
View full question & answer→Question 131 Mark
Sum of two consecutive odd numbers is always divisible by $4.$
View full question & answer→Question 141 Mark
________ is the successor of the largest $3-$digit number.
AnswerWe know that,
largest $3-$digit number $= 999$
Successor of $999 = 999 + 1 $
$= 1000$
View full question & answer→Question 151 Mark
Height of a person is $1\ m\ 65\ cm.$ His height in millimetres is _________.
AnswerWe know that, $1\ m = 100\ cm$ and $1\ cm = 10\ mm$
$1\ m = 1000\ mm$ and $65\ cm = 65 × 10\ mm = 650\ mm$
So,
$1\ m\ 65\ cm = 1000\ mm + 650\ mm$
$= 1650\ mm$
View full question & answer→Question 161 Mark
$9128 \times $ ________ $= 9128$
Answer$9128 \times 1 = 9128$
Solution: If any number is multiplied by $1,$ then it gives the same number.
View full question & answer→Question 171 Mark
In Roman numeration, if a symbol is repeated, its value is multiplied as many times as it occurs.
AnswerSince, in Roman numeration, if a symbol is repeated, its value is added as many times as it occurs.
View full question & answer→Question 181 Mark
$2916\ \times $ _______ $= 0$
Answer$2916 \times 0 = 0$
Solution:
If any number is multiplied by zero, then their product is always zero.
View full question & answer→Question 191 Mark
A number is a ________ of each of its factors.
AnswerA number is a multiple of each of its factors. Solution: By general rule, a number is a multiple of each of its factors.
View full question & answer→Question 201 Mark
$HCF$ of two or more numbers may be one of the numbers.
AnswerIf all the numbers are multiples of same number, then the smallest number among them is their $HCF.$
View full question & answer→Question 211 Mark
On the following numbers, which is the greatest and which is the smallest? $38051425, 30040700, 67205602$
AnswerWe have, $38051425, 30040700$ and $67205602$
On comparing the given numbers. we get,
The greatest number $= 67205602$
the smallest number $= 30040700$
View full question & answer→Question 221 Mark
Predecessor of a two-digit number is always a two-digit number.
AnswerSince, predecessor of a two-digit number cannot be always a two digit number, e.g. Let a two-digit number be $10.$ Then, predecessor of $10 = 10 - 1 = 9$
View full question & answer→Question 231 Mark
Whole numbers are closed under ___________ and under ___________.
AnswerWhole numbers are closed under addition and under multiplication.
Solution:
If $a$ and $b$ are any two whole numbers, then $a + b = c ($whole numbers$).$
Also, $a \times b = c ($whole numbers$)$
View full question & answer→Question 241 Mark
If the sum of two distinct whole numbers is odd, then their difference also must be odd.
Question 251 Mark
$532235 = 5 \times 100000 + 3 \times 10000 + 2 \times 1000 + 2 \times 100 + 3 \times 10 + 5$
AnswerSince, $5 \times 100000 + 3 \times 10000 + 2 \times 1000 + 2 \times 100 + 3 \times 10 + 5 \times 1$
$= 500000 + 30000 + 2000 + 200 + 30 + 5 = 532235$
View full question & answer→Question 261 Mark
The number five crore twenty three lakh seventy eight thousand four hundred one can be written, using commas, in the Indian System of Numeration as ____________.
AnswerThe number five crore twenty three lakh seventy eight thousand four hundred one can be written, using commas, in the Indian System of Numeration as $5,23,78,401.$
View full question & answer→Question 271 Mark
If a number has _________ in ones place, then it is divisible by $10.$
AnswerIf a number has zero in ones place, then it is divisible by $10. $
View full question & answer→Question 281 Mark
Any non-zero whole number divided by itself, gives the quotient $1.$
AnswerIf a is any whole number, then $a + a = 1$
View full question & answer→Question 291 Mark
Addition is commutative for natural numbers.
AnswerIf $a$ and $b$ are two natural numbers, then
$a + b = b + a$
View full question & answer→Question 301 Mark
If the sum of the digits in a number is a of $3,$ then the number is _________ divisible by $3.$
AnswerIf the sum of the digits in a number is a of $3,$ then the number is multiple divisible by $3.$
View full question & answer→Question 311 Mark
If a whole number is divided by another whole number, which is greater than the first one, the quotient is not equal to zero.
Question 321 Mark
The largest $4-$digit number formed by the digits $6, 7, 0, 9$ using each digit only once, is $9760.$
AnswerSince, for making the largest number, we arrange the given digits in descending order. Descending order of the given digits is $9, 7, 6$ and $0.$
View full question & answer→Question 331 Mark
Of the given two natural numbers, the one having more digits, is greater.
Question 341 Mark
Length of river ‘Narmada’ is about $1290\ km.$ Its length in metres is __________.
AnswerLength of river ‘Narmada’ is about $1290\ km.$
Its length in metres is $1290000\ m.$
Solution:
We know that, $1\ km = 1000\ m$
$\therefore 1290\ km = 1290 \times 1000 = 1290000\ m$
View full question & answer→Question 351 Mark
In Roman numeration, a symbol is not repeated more than three times.
AnswerSince, it is a general rule.
View full question & answer→Question 361 Mark
There is a whole number which when added to a whole number, gives the number itself.
AnswerSince, if zero is added to any whole number, then the sum is the number itself.
View full question & answer→Question 371 Mark
$8925 \times 1 =$ _______
Answer$8925 \times 1 = 8925 $
View full question & answer→Question 381 Mark
The product of two whole numbers need not be a whole number.
AnswerWhole numbers are closed under multiplication.
View full question & answer→Question 391 Mark
If a number exactly divides the sum of three numbers, it must exactly divide the numbers separately.
AnswerIf a number divides three numbers exactly, it must divide their sum exactly, but vice-versa is not true.
View full question & answer→Question 401 Mark
If a number divides three numbe exactly, it must divide their sum exactly.
Question 411 Mark
If $0$ is subtracted from a whole number, then the result is the ________ itself.
AnswerIf $0$ is subtracted from a whole number, then the result is the number itself.
Solution:
If $a$ is any whole number, then $a - 0 = a$
View full question & answer→Question 421 Mark
The smallest $6-$digit natural number ending with $5$ is __________.
AnswerThe smallest $6-$digit natural number ending with $5$ is $100005.$
Solution:
We know that, smallest $6-$digit natural number $= 100000$
Smallest $6-$digit natural number ending with $5 = 100005$
View full question & answer→Question 431 Mark
The population of Pune was $2538473$ in $2001.$ Rounded off to nearest thousands, the population was __________.
AnswerThe population of Pune was $2538473$ in $2001.$ Rounded off to nearest thousands, the population was $2538000.$
Solution:
Rounded off $2538473$ to nearest thousands $= 2538000$
View full question & answer→Question 441 Mark
A number with three or more digits is divisible by $6,$ if the number formed by its last two digits (i.e. ones and tens) is divisible by $6.$
AnswerAccording to the divisibility test for $6,$ if a number is divisible by $2$ and $3$ both, then it is divisible by $6.$
View full question & answer→Question 451 Mark
A number with $4$ or more digits is divisible by $8,$ if the number formed by the last three digits is divisible by $8.$
AnswerAccording to the divisibility test for $8, 4$ or more digit number is divisible by $8,$ if the number formed by the last three digits is divisible by $8.$
View full question & answer→Question 461 Mark
$19 \times 12 + 19 = 19 \times (12 +$ _______$)$
Answer$19 \times 12 + 19 = 19 \times (12 + 1)$
Solution:
If $a, b$ and $c$ are three whole numbers, then,
$a \times b + a \times c = a(b + c) [$by distributive property$]$
View full question & answer→Question 471 Mark
The $LCM$ of two or more given numbers is the lowest of their common ___________.
AnswerThe $LCM$ of two or more given numbers is the lowest of their common multiples.
View full question & answer→Question 481 Mark
$a.\ 1$ metre $= .......$ millimetres.
$b.\ 1$ centimetre $= ........ $ millimetres.
$c.\ 1$ kilometre $= ....... $ millimetres.
Answer$a.$ We know that,
$10\ mm = 1\ cm$ and $100\ cm = 1\ m$
$1\ m = 1000\ mm$
$b.\ 1\ cm = 10\ mm$
$c.\ $ We know that,
$10\ mm = 1\ cm$
$100\ cm = m$ and $1000\ m = 1\ km$
$1\ km = 1000 \times 100 \times 10$
$= 1000000\ mm$ View full question & answer→Question 491 Mark
$39746 = 3 \times 10000 + 9 \times 1000 + 7 \times 100 + 4 \times 10 + 6$
AnswerSince, $3 \times 10000 + 9 \times 1000 + 7 \times 100 + 4 \times 10 + 6 \times 1$
$= 30000 + 9000 + 700 + 40 + 6 = 39746$
View full question & answer→Question 501 Mark
Estimated sum of $7826$ and $12469$ rounded off to hundreds is $20000.$
AnswerSince, rounded off $7826$ to nearest hundreds $= 7800$ And rounded off $12469$ to nearest hundreds $= 12500$
So, estimated sum $= 7800 + 12500 = 20300$
Here, $20300$ is nearest to $20000.$
So, the given statement is true.
View full question & answer→Question 511 Mark
Every multiple of a number is greater than or equal to the number.
Question 521 Mark
The $LCM$ of two coprime numbers is equal to product of the numbers.
Answer Consider a pair of coprime numbers $3$ and $4.$
$HCF$ of $3$ and $4 = 1$
$LCM \times HCF =$ Product of the two numbers Now,
$LCM \times HCF = 3 \times 4 $
$\Rightarrow LCM \times 1 = 3 \times 4 $
$\Rightarrow LCM = 12$
View full question & answer→Question 531 Mark
Natural numbers are closed under subtraction.
AnswerSince, the difference of any two natural numbers is not always a natural number.
View full question & answer→Question 541 Mark
Successor of a one-digit number is always a one-digit number.
AnswerSince, successor of a one-digit number may be a two-digit number. e.g.
Let one-digit number be $9.$
Then, successor of $9 = 9 + 1 = 10,$
which is a two-digit number.
View full question & answer→Question 551 Mark
Every whole number is the successor of another whole number.
AnswerSince, $0$ (whole number) is not the successor of any whole number.
View full question & answer→Question 561 Mark
$2395\ \times $ _________ $= 6195 \times 2395.$
Answer$2395 \times 6195 = 6195 \times 2395.$
Solution: If $a$ and $b$ are two whole numbers,
then $a \times b = b \times a [$by commutative property$]$
View full question & answer→Question 571 Mark
If the $HCF$ of two numbers is one of the numbers, then their $LCM$ is the other number.
AnswerSince, $HCF \times LCM =$ First number $\times$ Second number
View full question & answer→Question 581 Mark
The number of factors of a prime number is ___________.
AnswerEvery prime number has only two factors, $1$ and the number itself.
View full question & answer→Question 591 Mark
$a.\ 10$ million $= .......$ crore $10.$
$b.\ $ lakh $= ........$ million.
Answer$a.$ We know that,
$1$ crore $= 100$ lakh and $1$ million $= 10$ lakh
$1$ crore $= 10$ million
$b.$ We know that,
$1$ million $= 10$ lakh
View full question & answer→Question 601 Mark
Successor of a $3-$digit number is always a $3-$digit number.
AnswerSince, successor of a $3-$digit number cannot be always a $3-$digit number, e.g. Successor of $999 = 999 + 1 = 1000$
View full question & answer→Question 611 Mark
$1$ is the identity for multiplication of whole numbers.
AnswerIf a is any whole number, then $a \times 1 = a$
View full question & answer→Question 621 Mark
$LXXIV = 74$
AnswerSince, $LXXIV = 50 + 10 + 10 + 4 = 74$
View full question & answer→Question 631 Mark
Any two consecutive numbers are coprime.
AnswerBy definition, coprime numbers are those numbers, whose $HCF$ is $1.$
View full question & answer→Question 641 Mark
$1$ is identity for addition of whole numbers.
AnswerSince, $1$ is the identity for multiplication of whole numbers.
View full question & answer→Question 651 Mark
$1001 \times 2002 = 1001 \times (1001 +$ ________$).$
Answer$1001 \times 2002 = 1001 \times (1001 + 1001).$
Solution:
Let $x$ be the missing number, then $1001 \times 2002 = 1001(1001 + x) $
$\Rightarrow 2002 = (1001 + x) $
$\Rightarrow 2002 - 1001 = x$
$\therefore x = 1001$
View full question & answer→Question 661 Mark
A number is divisible by __________ if it has any of the digits $0, 2, 4, 6$ or $8,$ in its ones place.
AnswerAccording to the divisibility test for $2,$
if the last digit of a number is either $0$ or $2$ or $4$ or $6$ or $8,$
then the number is divisible by $2.$
View full question & answer→Question 671 Mark
By reversing the order of digits of the greatest number made by five different non-zero digits, the new number is the __________ number of five digits.
Answer For making smallest number from given digits, we arrange them in ascending order and for greatest number, we arrange them in descending order.
View full question & answer→Question 681 Mark
A whole number divided by another whole number greater than $1,$ never gives the quotient equal to the former.
View full question & answer→Question 691 Mark
Natural numbers are closed under __________ and under ____________.
AnswerNatural numbers are closed under addition and under multipication.
Solution:
If $a$ and $b$ are any two natural numbers,
then $a + b = c ($natural numbers$)$
Also, $a \times b = c ($natural numbers$)$
View full question & answer→Question 701 Mark
If the sum of the digits of a number is divisible by $3,$ then the number itself is divisible by $9.$
AnswerAccording to the divisibility test of $9,$ a number is divisible by $9,$ if the sum of the digits of a number is divisible by $9.$
View full question & answer→Question 711 Mark
The smallest whole number is _______.
AnswerWe know that, whole numbers start from $0.$
Therefore, the smallest whole number is $0.$
View full question & answer→Question 721 Mark
The highest common factor of two or more numbers is greater than their lowest common multiple.
Answer Since, $HCF$ of two or more numbers is less than their lowest common multiple.
View full question & answer→Question 731 Mark
Predecessor of $100000$ is __________.
AnswerFor getting predecessor of the given number,
we subtract $1$ from the given number.
So, predecessor of $100000 = 100000 - 1 = 99999$
View full question & answer→Question 741 Mark
$125 + (68 + 17) = (125 + $______ $) + 17$
Answer$125 + (68 + 17) = (125 + 68) + 17$
Solution: If $a, b$ andc are three whole numbers,
then $a + (b + c) = (a + b) + c [$by associative property$]$
View full question & answer→Question 751 Mark
Sum of two distinct whole numbers is always less than their product.
AnswerLet us understand this through example.
$1 + 2 = 3$ and $1 \times 2 = 2$
Here, sum $(3)\ > $ product $(2)$ We can say that sum of two whole numbers is not always less than their product.
View full question & answer→Question 761 Mark
A number is divisible by $5,$ if it has _________ in its ones place.
AnswerAccording to divisibility test for $5,$
if a number has $0$ or $5$ in its ones place,
then it is divisible by $5.$
View full question & answer→Question 771 Mark
$a.\ 1$ gram $= ......$ milligrams.
$b.\ 1$ litre $= ......$ millilitres.
$c.\ 1$ kilogram $= .......$ milligrams.
Answer$a.\ 1\ g = 1000\ mg$
$b.\ 1\ L = 1000\ mL$
$c.$ We know that,
$1000\ mg = 1\ g$ and $1000\ g = 1\ kg$
$1\ kg = (1000 \times 1000)\ mg$
$= 1000000\ mg$ View full question & answer→Question 781 Mark
The number $LIV$ is greater than $LVI.$
AnswerSince, $LIV = 50 + 4 = 54$
$LVI = 50 + 5 + 1 = 56$
$\therefore LVI > LIV$
View full question & answer→Question 791 Mark
Two numbers having only $1$ as a common factors, are called __________ numbers.
AnswerTwo numbers having only $1$ as a common factors, are called coprime numbers.
View full question & answer→Question 801 Mark
In Roman numeration, the symbol $X$ can be subtracted from __________ $M$ and $C$ only.
AnswerBy general rule, in Roman numeration, the symbol $X$ can be subtracted from $L, M$ and $C$ only.
View full question & answer→Question 811 Mark
$2$ is the only ________ number, which is even.
Answer$2$ is the only prime number, which is even.
Solution:
Those numbers which are divisible by $1$ and the number itself, are known as prime numbers.
$2$ is the only prime number which is even.
View full question & answer→Question 821 Mark
Every whole number has its successor.
Question 831 Mark
All numbers which are divisible by $4,$ may not be divisible by $8.$
AnswerSince, $4$ is divisible by $4,$ but it is not divisible by $8.$
View full question & answer→Question 841 Mark
$24 \times 35 = 24 \times 18 + 24\ \times $_______
AnswerLet a be the missing number, then
$24 \times 35 = 24 \times 18 + 24 \times a $
$\Rightarrow 24 \times 35 - 24 \times 18 = 24 \times a $
$\Rightarrow 24(35 - 18) = 24 \times a $
$\Rightarrow 24 \times 17 = 24 \times a$
$\therefore a = 17$
View full question & answer→Question 851 Mark
Natural numbers are not closed under multiplication.
AnswerSince, the sum of any two natural numbers is always a natural number.
View full question & answer→Question 861 Mark
$XXIX = 31$
AnswerSince, $XXIX = 10 + 10 + 9 = 29 \neq 31$
View full question & answer→Question 871 Mark
$82546 = 8 \times 1000 + 2 \times 1000 + 5 \times 100 + 4 \times 10 + 6$
AnswerSince, $8 \times 1000 + 2 \times 1000 + 5 \times 100 + 4 \times 10 + 6 \times 1$
$= 8000 + 2000 + 500 + 40 + 6 = 10546 \neq 82546$
View full question & answer→Question 881 Mark
The $HCF$ of two or more given numbers is the highest of their common ____________.
AnswerThe $HCF$ of two or more given numbers is the highest of their common factors.
View full question & answer→Question 891 Mark
Multiplication is distributive over ___________ for whole numbers.
AnswerMultiplication is distributive over addition for whole numbers.
Solution:
If $a, b$ and $c$ are three whole numbers,
then $a(b + c) = (a \times b) + (a \times c)$
View full question & answer→Question 901 Mark
Every whole number has its predecessor.
AnswerSince, every whole number does not have a predecessor, e.g. $0$ does not have a predecessor.
View full question & answer→Question 911 Mark
$32 \times (27 \times 19) = (32 \times $ ______$) \times 19$
Answer$32 \times (27 \times 19) = (32 \times 27) \times 19$
Solution: If $a, b$ and $c$ are any three natural numbers,
then $a \times (b \times c) = (a \times b) \times c [$by multiplicative property$]$
View full question & answer→Question 921 Mark
The largest six-digit telephone number that can be formed by using digits $5, 3, 4, 7, 0$ and $8$ only once, is $875403.$
AnswerSince, for making largest six-digit number,
we arrange the given digits in descending order,
we get i.e. $8, 7, 5, 4, 3$ and $0.$
Largest six-digit number $= 875430$
View full question & answer→Question 931 Mark
The number $85764$ rounded off to nearest hundreds is written as $85700.$
AnswerSince, rounded off $85764$ to nearest hundreds $= 85800$
View full question & answer→Question 941 Mark
Successor of $106159$ is _________.
AnswerFor getting successor of the given number,
we add $1$ to the given number.
So, successor of $106159 = 106159 + 1 = 106160$
View full question & answer→Question 951 Mark
The numbers $4578, 4587, 5478$ and $5487$ are in descending order.
AnswerSince, in descending order, we arrange the given numbers from largest to smallest,
$5487 > 5478 > 4587 > 4578$
View full question & answer→Question 961 Mark
The numbers having more than two factors are called __________ numbers.
AnswerThe numbers having more than two factors are called composite numbers.
View full question & answer→Question 971 Mark
$10001 \times 0 = $_________.
AnswerIf any number is multiplied by zero, then their product is always zero.
View full question & answer→Question 981 Mark
The smallest $4-$digit number is the successor of the largest $3-$digit number.
AnswerSince, the largest $3-$digit number $= 999$
Successor of $999 = 999 + 1 = 1000 [$smallest $4-$digit number$]$
View full question & answer→Question 991 Mark
_________ is a factor of every number.
AnswerWe know that, $1$ is a factor of every number.
View full question & answer→Question 1001 Mark
Number of primes between $1$ to $100$ is __________.
AnswerPrime numbers between $1$ to $100$ are $2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89$ and $97.$
Number of prime numbers between $1$ to $100 = 25$
View full question & answer→Question 1011 Mark
If a number exactly divides the sum of three numbers, it must exactly divide the numbers separately.
AnswerIf a number divides three numbers exactly, it must divide their sum exactly, but vice-versa is not true.
View full question & answer→Question 1021 Mark
Every number is a multiple of itself.
AnswerThere are infinite number of multiples of any given number.
View full question & answer→Question 1031 Mark
$24 \times 35 = 24 \times 18 + 24 \times $_______
AnswerLet a be the missing number,
then $24 \times 35 = 24 \times 18 + 24 \times a $
$\Rightarrow 24 \times 35 - 24 \times 18 = 24 \times a $
$\Rightarrow 24(35 - 18) = 24 \times a $
$\Rightarrow 24 \times 17 = 24 \times a$
$\therefore a = 17$
View full question & answer→Question 1041 Mark
If the difference between the sum of digits at odd places (from the right) and sum of digits at even places (from the right) of a number is either $0$ or divisible by , then the number is divisible by _______.
AnswerAccording to the divisibility test for $11,$ if the difference between the sum of digits at odd places and sum of digits at even places of a number is either $0$ or divisible by $11,$ then number is divisible by $11.$
View full question & answer→Question 1051 Mark
$LCM$ of two or more numbers may be one of the numbers.
AnswerIf all the numbers are multiples of same number, then the greatest number among them is their $LCM.$
View full question & answer→Question 1061 Mark
$24 \times 25 = 24\ \times $_____$ /4 = 600$
AnswerLet a be the missing number, then $\times\ 24$
$24 \times 25$
$=24\times\big(\frac{\text{a}}{4}\big)$
$=\big(\frac{24}{24}\big)\times25\times4$
$\Rightarrow\text{a}=100$
$24\times25=24\times\Big(\frac{100}{4}\Big)=600$
View full question & answer→Question 1071 Mark
$LCM$ of two numbers is $28$ and their $HCF$ is $8.$
AnswerSince, $LCM (28)$ is not divisible by $HCF (8).$
View full question & answer→Question 1081 Mark
The number of multiples of a given number is finite.
AnswerThere are infinite number of multiples of any given number.
View full question & answer→Question 1091 Mark
Between any two natural numbers, there is one natural number.
AnswerBetween any two natural numbers $a$ and $b,$ there are $(b - a - 1)$ natural numbers, where $b > a.$
View full question & answer→Question 1101 Mark
Division of a whole number by ____________ is not defined.
AnswerDivision of a whole number by $0$ (zero) is not defined.
View full question & answer→Question 1111 Mark
Writing of numbers from the greatest to the smallest is called an arrangement in __________ order.
AnswerWriting of numbers from the greatest to the smallest is called an arrangement in Descending order.
View full question & answer→Question 1121 Mark
The $HCF$ of two numbers is smaller than the smaller of the numbers.
AnswerSince, $HCF$ of two numbers is either equal to or greater than the smaller of the numbers.
View full question & answer→Question 1131 Mark
The distance between Srinagar and Leh is $422\ km.$ The same distance in metres is ___________.
AnswerThe distance between Srinagar and Leh is $422\ km.$
The same distance in metres is $422000\ m.$
Solution: We know that,
$1\ km = 1000\ m $
$422\ km = 422 \times 1000 = 422000\ m$
View full question & answer→