MCQ 11 Mark
Tick $(\checkmark)$ the correct answer of the following: $\sqrt{0.9}\times\sqrt{1.6}=\ ?$
- A
$0.12$
- B
$1.2$
- ✓
$0.75$
- D
$12$
AnswerCorrect option: C. $0.75$
$=\sqrt{0.9\times1.6}$
$=\sqrt{1.44}$
$=\sqrt{1.2\times1.2}$
$=1.2$
View full question & answer→MCQ 21 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following is a pythagorean triplet$?$
- A
$(2, 3, 5)$
- ✓
$(5, 7, 9)$
- C
$(6, 9, 11)$
- D
$(8, 15, 17)$
AnswerCorrect option: B. $(5, 7, 9)$
$(8)^2+ (15)^2$
$= 64 + 225$
$= 289$
$= (17)^2$
View full question & answer→MCQ 31 Mark
Mark $(\checkmark)$ against the correct answer $\sqrt{2\frac{1}{4}}=\ ?$
- A
$2\frac{1}{2}$
- B
$1\frac{1}{4}$
- ✓
$1\frac{1}{2}$
- D
AnswerCorrect option: C. $1\frac{1}{2}$
$\sqrt{2\frac{1}{4}}$
$=\sqrt{\frac{9}{4}}$
$=\frac{\sqrt{9}}{\sqrt{4}}$
$=\frac{\sqrt{3\times3}}{\sqrt{2\times2}}$
$=\frac{3}{2}=1\frac{1}{2}$
View full question & answer→MCQ 41 Mark
Tick $(\checkmark)$ the correct answer of the following: The square of a proper fraction is:
- A
Larger than the fraction.
- ✓
Smaller than the fraction.
- C
- D
AnswerCorrect option: B. Smaller than the fraction.
The square of a proper fraction is the smaller than the given fraction.
View full question & answer→MCQ 51 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following numbers is not a perfect square$?$
Hint: The number $81000$ ends in an odd number of zeros.
- A
$3600$
- B
$6400$
- ✓
$81000$
- D
$2500$
AnswerCorrect option: C. $81000$
$81000$ as it has odd number of zeros at its end.
View full question & answer→MCQ 61 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following cannot be the unit digit of a perfect square number?
Answeras the number with 8 in the end cannot be perfect square.
View full question & answer→MCQ 71 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following is the square of an odd number$?$
- A
$2116$
- B
$3844$
- ✓
$1369$
- D
$2500$
AnswerCorrect option: C. $1369$
We know that the square of an odd number is also an odd number.
$\begin{array}{c|c}&37\\\hline3&\overline{13}\ \overline{69}\\&\ \ 9\ \ \ \ \ \\\hline67&\ \ 469\\&\ \ \ \ 469\\\hline&\ \ \ \ \ \times\\\end{array}$
$1369$ is the square of an odd number.
View full question & answer→MCQ 81 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following numbers is not a perfect square$?$
Hint: The number $2222$ ends in $2.$
- A
$1444$
- B
$3136$
- C
$961$
- ✓
$2222$
AnswerCorrect option: D. $2222$
$2222$ as it has $2$ in the end.
View full question & answer→MCQ 91 Mark
Mark $(\checkmark)$ against the correct answer $\sqrt{72}\times\sqrt{98}=\ ?$
Answer$\sqrt{72}\times\sqrt{98}$
$=\sqrt{2\times2\times2\times3\times3}\times\sqrt{2\times7\times7}$
$=\sqrt{2\times2\times2\times3\times3\times2\times7\times7}$
$=2\times2\times3\times7$
$=84$
View full question & answer→MCQ 101 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following is the square of an even number?
AnswerWe know that the square on an even number is also an even number. $196$ is the square of an even number.
View full question & answer→MCQ 111 Mark
Mark $(\checkmark)$ against the correct answer Which of the following numbers is not a perfect square$?$
- A
$529$
- B
$961$
- C
$1024$
- ✓
$1222$
AnswerCorrect option: D. $1222$
A number ending in $2, 3, 7$ or $8$ is not a perfect square.
View full question & answer→MCQ 121 Mark
Tick $(\checkmark)$ the correct answer of the following: $\frac{\sqrt{288}}{\sqrt{128}}=\ ?$
- A
$\frac{\sqrt3}{2}$
- B
$\frac{3}{\sqrt2}$
- ✓
$\frac{3}{2}$
- D
$1.49$
AnswerCorrect option: C. $\frac{3}{2}$
$\frac{\sqrt{288}}{\sqrt{128}}$
$=\sqrt{\frac{288}{128}}$
$=\sqrt{\frac{9}{4}}$
$=\frac{3}{2}$
View full question & answer→MCQ 131 Mark
Mark $(\checkmark)$ against the correct answerWhat least number must be subtracted from $178$ to make it a perfect square$?$
Answer$178-9=169$
$\sqrt{169}=13$
View full question & answer→MCQ 141 Mark
Tick $(\checkmark)$ the correct answer of the following: $\sqrt{0.9}=\ ?$
- A
$0.3$
- B
$0.03$
- C
$0.33$
- ✓
$0.94$
AnswerCorrect option: D. $0.94$
$\begin{array}{c|c}&0.94\\\hline9&0.\overline{90}\ \overline{00}\\&\ \ \ \ 81\ \ \ \ \ \\\hline184&\ \ \ \ \ \ 900\\&\ \ \ \ \ \ \ 736\\\hline&\ \ \ \ \ \ \ \ 164\\\end{array}$
View full question & answer→MCQ 151 Mark
Tick $(\checkmark)$ the correct answer of the following: What least number must be added to $15370$ to make it a perfect square$?$
AnswerFinding the square root of $15370$ by division method
We get Remainder $= 261$
Now $(123)^2= 15129$
and $(124)^2= 15379$
The least number to be added
$= 15129 - 15379 = 6$
View full question & answer→MCQ 161 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following numbers is not a perfect square$?$
Hint: The number $1843$ ends in $3.$
- ✓
$1843$
- B
$3721$
- C
$1024$
- D
$1296$
AnswerCorrect option: A. $1843$
$1843$ as it has $3$ in the end.
View full question & answer→MCQ 171 Mark
Tick $(\checkmark)$ the correct answer of the following: What least number must be subtracted from $176$ to make it a perfect square?
Answer$\begin{array}{c|c}&13\\\hline1&\bar{1}\ \overline{76}\\&1\ \ \ \ \ \\\hline23&\ \ \ 76\\&\ \ \ \ 69\\\hline&\ \ \ \ \ \ 7\\\end{array}$
$\therefore$ Remainder $= 7$
$7$ must be subtracted
View full question & answer→MCQ 181 Mark
Tick $(\checkmark)$ the correct answer of the following: What least number must be added to $526$ to make it a perfect square$?$
Answer Finding the square root of $526$ by division method
$\begin{array}{c|c}&22\\\hline2&{5}\ {26}\\&4\ \ \ \ \ \\\hline42&\ 126\\&\ \ \ \ 84\\\hline&\ \ \ \ \ \ 42\\\end{array}$
$\therefore$ We get Remainder $= 42$
Now $(22)^2= 484$ and $(23)^2= 529$
The least number to be added $= 529 - 526 = 3$
View full question & answer→MCQ 191 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following numbers is not a perfect square$?$
Hint: The number $5478$ ends in $8.$
- A
$7056$
- B
$3969$
- ✓
$5478$
- D
$4624$
AnswerCorrect option: C. $5478$
$547$8 as it has $8$ at in the end.
View full question & answer→MCQ 201 Mark
Tick $(\checkmark)$ the correct answer of the following: Which of the following numbers is not a perfect square?
Hint: The number $4787$ ends in $7.$
- A
$1156$
- ✓
$4787$
- C
$2704$
- D
$3969$
AnswerCorrect option: B. $4787$
$4787$ as it has $7$ in the end.
View full question & answer→MCQ 211 Mark
Tick $(\checkmark)$ the correct answer of the following: If $n$ is odd, then $(1 + 3 + 5 + 7 + ...$ to n terms$) $ is equal to :
- A
$ \left(n^2+1\right) $
- B
$ \left(n^2-1\right) $
- ✓
$ n^2 $
- D
$ \left(2 n^2+1\right)$
AnswerCorrect option: C. $ n^2 $
$ 1 + 3 + 5 + 7 + ...$ to $n$ terms when $n$ is an odd is equal to $ n^2 $.
Sum of first $n$ odd natural number is $ n^2 $.
View full question & answer→MCQ 221 Mark
Mark $(\checkmark)$ against the correct answer What least number must be added to $521$ to make it a perfect square$?$
Answer$521+8=259$
$\sqrt{529}=23$
View full question & answer→MCQ 231 Mark
Mark $(\checkmark)$ against the correct answer
Which of the following is the square of an even number$?$
AnswerCorrect option: C. $1764$
The square of an even number is always even.
View full question & answer→MCQ 241 Mark
Tick $(\checkmark)$ the correct answer of the following: $\sqrt{2\frac{1}{4}}=\ ?$
- A
$2\frac{1}{2}$
- ✓
$1\frac{1}{2}$
- C
$1\frac{1}{4}$
- D
AnswerCorrect option: B. $1\frac{1}{2}$
$\sqrt{2\frac{1}{4}}$
$=\sqrt{\frac{9}{4}}$
$=\frac{3}{2}$
$=1\frac{1}{2}$
View full question & answer→MCQ 251 Mark
Tick $(\checkmark)$ the correct answer of the following: $\sqrt{0.1}=\ ?$
AnswerCorrect option: C. $0.316$
$\begin{array}{c|c}&0.316\\\hline3&0.\overline{10}\ \overline{00}\ \overline{00}\\&9\ \ \ \ \ \\\hline61&100\\&\ \ \ 61\\\hline626&\ \ \ \ \ \ \ 3900\\&\ \ \ \ \ \ \ 3756\\\hline&\ \ \ \ \ \ \ \ \ \ 144\\\end{array}$
View full question & answer→MCQ 261 Mark
Which of the following is the square of an odd number?
MCQ 271 Mark
Which of the following is the square of an even number?
MCQ 281 Mark
$\sqrt{2 \frac{1}{4}}=?$
- A
$2 \frac{1}{2}$
- B
$1 \frac{1}{2}$
- C
$1 \frac{1}{4}$
- D
AnswerB. $1 \frac{1}{2}$
Hint. $\sqrt{2 \frac{1}{4}}=\sqrt{\frac{9}{4}}=\frac{3}{2}=1 \frac{1}{2}$.
View full question & answer→MCQ 291 Mark
$\frac{\sqrt{288}}{\sqrt{128}}=?$
- A
$\frac{\sqrt{3}}{2}$
- B
$\frac{3}{\sqrt{2}}$
- C
$\frac{3}{2}$
- D
AnswerC. $\frac{3}{2}$
Hint. $\frac{\sqrt{288}}{\sqrt{128}}=\sqrt{\frac{288}{128}}=\sqrt{\frac{9}{4}}=\frac{3}{2}$.
View full question & answer→MCQ 301 Mark
$\sqrt{0.9} \times \sqrt{1.6}=?$
AnswerB. 1.2
Hint. $\sqrt{0.9} \times \sqrt{1.6}=\sqrt{1.44}=1.2$.
View full question & answer→MCQ 311 Mark
$\sqrt{0.1}=?$
View full question & answer→MCQ 321 Mark
$\sqrt{0.9}=?$
View full question & answer→MCQ 331 Mark
What least number must be added to 15370 to make it a perfect square?
MCQ 341 Mark
What least number must be added to 526 to make it a perfect square?
MCQ 351 Mark
What least number must be subtracted from 176 to make it a perfect square?
MCQ 361 Mark
Which of the following is a Pythagorean triplet?
MCQ 371 Mark
If $n$ is odd, then $(1+3+5+7+ . . .$ to $n$ terms $)$ is equal to
- A
$\left(n^2+1\right)$
- B
$\left(n^2-1\right)$
- ✓
$n^2$
- D
$\left(2n^2+1\right)$
View full question & answer→MCQ 381 Mark
The square of a proper fraction is
- A
- ✓
smaller than the fraction
- C
- D
AnswerCorrect option: B. smaller than the fraction
View full question & answer→MCQ 391 Mark
Which of the following cannot be the unit digit of a perfect square number?
MCQ 401 Mark
Which of the following numbers is not a perfect square?
AnswerC. 81000
Hint. The number 81000 ends in an odd number of zeros.
View full question & answer→MCQ 411 Mark
Which of the following numbers is not a perfect square?
AnswerB. 4787
Hint. The number 4787 ends in 7.
View full question & answer→MCQ 421 Mark
Which of the following numbers is not a perfect square?
AnswerA. 1843
Hint. The number 1843 ends in 3.
View full question & answer→MCQ 431 Mark
Which of the following numbers is not a perfect square?
AnswerD. 2222
Hint. The number 2222 ends in 2.
View full question & answer→MCQ 441 Mark
Which of the following numbers is not a perfect square?
AnswerC. 5478
Hint. The number 5478 ends in 8 .
View full question & answer→