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Quantitative Aptitude

SQUARE ROOT AND CUBE ROOT MCQs

Square Roots, Cube Roots, Squares And Square Roots

Total Questions : 547 | Page 13 of 55 pages
Question 121. $$\sqrt {1.5625} = ?$$
  1.    1.05
  2.    1.25
  3.    1.45
  4.    1.55
 Discuss Question
Answer: Option B. -> 1.25
Question 122. If a = 0.1039, then the value of $$\sqrt {4{a^2} - 4a + 1} + 3a$$     is:
  1.    0.1039
  2.    0.2078
  3.    1.1039
  4.    2.1039
 Discuss Question
Answer: Option C. -> 1.1039
Question 123. If $$x = \frac{{\sqrt 3 + 1}}{{\sqrt 3 - 1}}$$   and $$y = \frac{{\sqrt 3 - 1}}{{\sqrt 3 + 1}},$$   then the value of $$\left( {{x^2} + {y^2}} \right)$$   is?
  1.    10
  2.    13
  3.    14
  4.    15
 Discuss Question
Answer: Option C. -> 14
Question 124. A group of students decided to collect as many paise from each member of group as is the number of members. If the total collection amounts to Rs. 59.29, the number of the member is the group is:
  1.    57
  2.    67
  3.    77
  4.    87
 Discuss Question
Answer: Option C. -> 77
Question 125. If $$\sqrt 5 = 2.236, $$   then the value of $$\frac{{\sqrt 5 }}{2}$$ $$ - $$ $$\frac{{10}}{{\sqrt 5 }}$$ $$ + $$ $$\sqrt {125} $$   is equal to :
  1.    5.59
  2.    7.826
  3.    8.944
  4.    10.062
 Discuss Question
Answer: Option B. -> 7.826
Question 126. The square root of $$\left( {7 + 3\sqrt 5 } \right)$$  $$\left( {7 - 3\sqrt 5 } \right)$$   is
  1.    $$\sqrt 5 $$
  2.    2
  3.    4
  4.    $$3\sqrt 5 $$
 Discuss Question
Answer: Option B. -> 2
Question 127. $$\left( {\frac{{\sqrt {625} }}{{11}} \times \frac{{14}}{{\sqrt {25} }} \times \frac{{11}}{{\sqrt {196} }}} \right){\kern 1pt} $$     is equal to :
  1.    5
  2.    6
  3.    8
  4.    11
 Discuss Question
Answer: Option A. -> 5
Question 128. $$\sqrt {0.0169 \times ?} = 1.3$$
  1.    10
  2.    100
  3.    1000
  4.    None of these
 Discuss Question
Answer: Option B. -> 100
Question 129. $${\left( {\sqrt 3 - \frac{1}{{\sqrt 3 }}} \right)^2}\,{\text{simplifies}}\,{\text{to:}}$$
  1.    $$\frac{3}{4}$$
  2.    $$\frac{4}{{\sqrt 3 }}$$
  3.    $$\frac{4}{3}$$
  4.    None of these
 Discuss Question
Answer: Option C. -> $$\frac{4}{3}$$
Question 130. How many two-digit numbers satisfy this property. : The last digit (unit's digit) of the square of the two-digit number is 8 ?
  1.    1
  2.    2
  3.    3
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these

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