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Quantitative Aptitude

SQUARE ROOT AND CUBE ROOT MCQs

Square Roots, Cube Roots, Squares And Square Roots

Total Questions : 547 | Page 18 of 55 pages
Question 171. If $$\sqrt {{3^n}} = 729$$  , then the value of n is ?
  1.    6
  2.    8
  3.    10
  4.    12
 Discuss Question
Answer: Option D. -> 12
Question 172. $$\sqrt {\frac{{0.0196}}{?}} = 0.2$$
  1.    0.49
  2.    0.7
  3.    4.9
  4.    None of these
 Discuss Question
Answer: Option A. -> 0.49
Question 173. If $$\sqrt {1369} + \sqrt {0.0615 + x} $$      = 37.25, the x is equal to ?
  1.    $${10^{ - 1}}$$
  2.    $${10^{ - 2}}$$
  3.    $${10^{ - 3}}$$
  4.    None of these
 Discuss Question
Answer: Option C. -> $${10^{ - 3}}$$
Question 174. If $$\sqrt {\left( {x - 1} \right)\left( {y + 2} \right)} = 7,$$     x and y being positive whole numbers, then the values of x and y respectively are ?
  1.    8, 5
  2.    15, 12
  3.    22, 19
  4.    None of these
 Discuss Question
Answer: Option A. -> 8, 5
Question 175. Three-fifth of the square of a certain number is 126.15. What is the numbers ?
  1.    14.5
  2.    75.69
  3.    145
  4.    210.25
 Discuss Question
Answer: Option A. -> 14.5
Question 176. If $$\sqrt {1 + \frac{x}{{169}}} {\text{ = }}\frac{{14}}{{13}}{\text{,}}$$    then x is equal to ?
  1.    1
  2.    13
  3.    27
  4.    None of these
 Discuss Question
Answer: Option C. -> 27
Question 177. The value of $$\sqrt 2 $$   up to three places of decimal is = ?
  1.    1.410
  2.    1.412
  3.    1.413
  4.    1.414
 Discuss Question
Answer: Option D. -> 1.414
Question 178. If $$3\sqrt 5 + \sqrt {125} = 17.88{\text{,}}$$     then what will be the value of $$\sqrt {80} $$  $$ + $$ $$6\sqrt 5 $$  = ?
  1.    13.41
  2.    20.46
  3.    21.66
  4.    22.35
 Discuss Question
Answer: Option D. -> 22.35
Question 179. The approximate value of $$\frac{{3\sqrt {12} }}{{2\sqrt {28} }}$$  $$ \div $$ $$\frac{{2\sqrt {21} }}{{\sqrt {98} }}$$   is ?
  1.    1.0605
  2.    1.0727
  3.    1.6007
  4.    1.6026
 Discuss Question
Answer: Option A. -> 1.0605
Question 180. Given $$\sqrt 2 = 1.414.$$   Then the value of $$\sqrt 8 $$  $$ + $$ $$2\sqrt {32} $$  $$ - $$ $$3\sqrt {128} $$  $$ + $$ $$4\sqrt {50} $$   is = ?
  1.    8.426
  2.    8.484
  3.    8.526
  4.    8.876
 Discuss Question
Answer: Option B. -> 8.484

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