MCQ 11 Mark
Which of the following rational numbers is positive?
- A$\frac{-8}{7}$
- B$\frac{19}{-13}$
- ✓$\frac{-3}{-4}$
- D$\frac{-21}{13}$
Answer
View full question & answer→Correct option: C.
$\frac{-3}{-4}$
$\frac{-3}{-4}$
Questions
M.C.Q. [1 Marks Each]
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12 questions · timed · auto-graded
MCQ 21 Mark
In the standard form of a rational number, the denominator is always a:
- A$0$
- BNegative integer.
- ✓Positive integer.
- D$1$
Answer
View full question & answer→Correct option: C.
Positive integer.
$(c)$ By definition, a rational number is said to be in the standard form, if its denominator is a positive integer.
MCQ 31 Mark
In the standard form of a rational number, the common factor of numerator and denominator is always:
- A$0$
- ✓$1$
- C$-2$
- D$2$
Answer
View full question & answer→Correct option: B.
$1$
$(b)$ By definition, in the standard form of a rational number, the common factor of numerator and denominator is always$1$.
Note: Common factor means, a number which divides both the given two numbers.
Note: Common factor means, a number which divides both the given two numbers.
MCQ 41 Mark
Which is greater number in the following?
- A$\frac{1}{-2}$
- B$0$
- ✓$\frac{1}{2}$
- D$-2$
Answer
View full question & answer→Correct option: C.
$\frac{1}{2}$
$(c)$ Obviously, $\frac{1}{2}$ is greater, since this is ony number which is on the rightmost side of the number line among others.
MCQ 51 Mark
Which of the following rational numbers is equal to its reciprocal?
- ✓$1$
- B$2$
- C$\frac{1}{2}$
- D$0$
Answer
View full question & answer→Correct option: A.
$1$
$1.$ Reciparocal of $1=\frac{1}{1}=1$
$2.$ Reciparocal of $2\frac{1}{2}$
$3.$ Reciparocal of $\frac{1}{2}=\frac{1}{\frac{1}{2}}=2$
$4.$ Reciparocal of $0=\frac{1}{0}$
Note: $1$ is the only number, which is equal its recprocal.
$2.$ Reciparocal of $2\frac{1}{2}$
$3.$ Reciparocal of $\frac{1}{2}=\frac{1}{\frac{1}{2}}=2$
$4.$ Reciparocal of $0=\frac{1}{0}$
Note: $1$ is the only number, which is equal its recprocal.
MCQ 61 Mark
Which of the following is equivalent to $\frac{4}{5}?$
- A$\frac{4}{5}$
- B$\frac{16}{25}$
- ✓$\frac{16}{20}$
- D$\frac{15}{25}$
Answer
View full question & answer→Correct option: C.
$\frac{16}{20}$
Given rational number is $\frac{4}{5},$
So, equivalent rational number $=\frac{4\times4}{5\times4}$
$=\frac{16}{20}$ [Multipying numerator and denominator by 4]
Note: If the numerator and denominator of a rational number is multiplied/divided by a non-zero integer, then the result we get, is equivalent rational number.
So, equivalent rational number $=\frac{4\times4}{5\times4}$
$=\frac{16}{20}$ [Multipying numerator and denominator by 4]
Note: If the numerator and denominator of a rational number is multiplied/divided by a non-zero integer, then the result we get, is equivalent rational number.
MCQ 71 Mark
How many rational numbers are there between two rational numbers?
- A$1$
- B$0$
- ✓Unlimited.
- D$100$
Answer
View full question & answer→Correct option: C.
Unlimited.
$(c)$ There are unlimited numbers between two rational numbers.
MCQ 81 Mark
The standard form of $\frac{-48}{60}$ is:
- A$\frac{48}{60}$
- B$\frac{-601}{48}$
- ✓$\frac{-4}{5}$
- D$\frac{-4}{-5}$
Answer
View full question & answer→Correct option: C.
$\frac{-4}{5}$
Given rational number is $\frac{-48}{60}.$
For standrad/ simplest form, divide numerator and denomin by their $HCF$
i.e. $\frac{-48+12}{60+12}=\frac{-4}{5}$
Hence, the standard form of $\frac{-48}{60}$ is $\frac{-4}{5}.$
For standrad/ simplest form, divide numerator and denomin by their $HCF$
i.e. $\frac{-48+12}{60+12}=\frac{-4}{5}$
Hence, the standard form of $\frac{-48}{60}$ is $\frac{-4}{5}.$
MCQ 91 Mark
The reciprocal of $\frac{1}{2}$ is:
- A$3$
- ✓$2$
- C$-1$
- D$0$
Answer
View full question & answer→Correct option: B.
$2$
$(b)$ Reciprocal of $\frac{1}{2}=\frac{1}{\frac{1}{2}}=2$
MCQ 101 Mark
A rational number is defined as a number that can be expressed in the form $\frac{\text{p}}{\text{q}},$ where $p$ and $q$ are integers and
- A$\text{q}=0$
- B$\text{q}=1$
- C$\text{q}\neq1$
- ✓$\text{q}\neq0$
Answer
View full question & answer→Correct option: D.
$\text{q}\neq0$
A number that can be expressed in the form of $\frac{\text{p}}{\text{q}},$ where $p$ and $q$ are integers and $\text{q}\neq0,$ is called a rational number.
MCQ 111 Mark
To reduce a rational number to its standard form, we divide its numerator and denominator by their:
- A$LCM.$
- ✓$HCF.$
- CProduct.
- DMultiple.
Answer
View full question & answer→Correct option: B.
$HCF.$
$HCF.$
$(b)$ To reduce a rational number to its standard form, we divide its numerator and denominator by their $HCF.$
$(b)$ To reduce a rational number to its standard form, we divide its numerator and denominator by their $HCF.$
MCQ 121 Mark
Which of the following rational numbers is negative?
- A$-\big(\frac{-3}{7}\big)$
- B$\frac{-5}{-8}$
- C$\frac{9}{8}$
- ✓$\frac{3}{-7}$
Answer
View full question & answer→Correct option: D.
$\frac{3}{-7}$
$a. -\big(\frac{-3}{7}\big)=\frac{3}{7}$
$b. \frac{-5}{-8}=\frac{5}{8}$
$c. \frac{9}{8}=\frac{9}{8}$
$d. \frac{3}{-7}=\frac{-3}{7}$
$b. \frac{-5}{-8}=\frac{5}{8}$
$c. \frac{9}{8}=\frac{9}{8}$
$d. \frac{3}{-7}=\frac{-3}{7}$