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Quantitative Aptitude

SQUARE ROOT AND CUBE ROOT MCQs

Square Roots, Cube Roots, Squares And Square Roots

Total Questions : 547 | Page 15 of 55 pages
Question 141. $$\sqrt {11881} \times \sqrt ? = 10137$$
  1.    8281
  2.    8649
  3.    9216
  4.    9409
  5.    None of these
 Discuss Question
Answer: Option B. -> 8649
Question 142. $$\sqrt {\frac{{16}}{{25}}} \times \sqrt {\frac{?}{{25}}} \times \frac{{16}}{{25}} = \frac{{256}}{{625}}$$
  1.    5
  2.    8
  3.    16
  4.    None of these
 Discuss Question
Answer: Option C. -> 16
Question 143. The square root of $$\left( {{{272}^2} - {{128}^2}} \right)$$   is = ?
  1.    144
  2.    200
  3.    240
  4.    256
 Discuss Question
Answer: Option C. -> 240
Question 144. $${\left[ {{{\left( {\sqrt {81} } \right)}^2}} \right]^2} = {\left( ? \right)^2}$$
  1.    8
  2.    9
  3.    4096
  4.    6561
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these
Question 145. If $$y = 5{\text{,}}$$   then what is the value of $$10y\sqrt {{y^3} - {y^2}} $$   = ?
  1.    $$50\sqrt 2 $$
  2.    100
  3.    $$200\sqrt 5 $$
  4.    500
 Discuss Question
Answer: Option D. -> 500
Question 146. $$\sqrt {\frac{{25}}{{81}} - \frac{1}{9}} = ?$$
  1.    $$\frac{2}{3}$$
  2.    $$\frac{4}{9}$$
  3.    $$\frac{{16}}{{81}}$$
  4.    $$\frac{{25}}{{81}}$$
 Discuss Question
Answer: Option B. -> $$\frac{4}{9}$$
Question 147. The digit in the unit's place in the square root of 15876 is = ?
  1.    2
  2.    4
  3.    6
  4.    8
 Discuss Question
Answer: Option C. -> 6
Question 148. Which of the following is closest to $$\sqrt 3 = \,?$$
  1.    1.69
  2.    $$\frac{{173}}{{100}}$$
  3.    1.75
  4.    $$\frac{9}{5}$$
 Discuss Question
Answer: Option B. -> $$\frac{{173}}{{100}}$$
Question 149. What percentage of the numbers from 1 to 50 have squares that end in the digit 1 ?
  1.    1%
  2.    5%
  3.    10%
  4.    11%
  5.    20%
 Discuss Question
Answer: Option E. -> 20%
Question 150. While solving a mathematical problem, Samidha squared a number and then subtracted 25 from it rather than the required i.e., first subtracting 25 from the number and then squaring it. But she got the right answer. What was the given number ?
  1.    13
  2.    38
  3.    48
  4.    Cannot be determined
  5.    None of these
 Discuss Question
Answer: Option A. -> 13

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