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(0.324 * 0.081 * 4.624) / (1.5625 * 0.0289 * 72.9 * 64) is the square root of ? |
| A) 24
B) 2.4
C) 0.024
D) 1.2
Correct Answer : 0.024 Explanation : (0.324 * 0.081 * 4.624) / (1.5625 * 0.0289 * 72.9 * 64)
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√64 - √36, is equal to ? |
| A) -2
B) 2
C) 1
D) 0
Correct Answer : 2 Explanation : √64 - √36 = 8- 6 = 2 |
6440 students were asked to stand in rows to form a perfect square. It was found that 40 students were left out. What will be the number of students in each row? |
| A) 40
B) 80
C) 64
D) 60
Correct Answer : 80 Explanation : Remaining students = 6440- 40 = 6400 |
What is √ { ( 0.064 * 6.25 ) / ( 0.081 * 4.84 ) } equal to? |
| A) 10/99 B) 100/99 C) 9 D) 99 Correct Answer : 100/99 Explanation : √{ ( 0.064 * 6.25 )/( 0.081 * 4.84 ) } |
What is the smallest number by which 3087 must be divided so that the quotient is a perfect cube? |
| A) 3 B) 21 C) 7 D) 9 Correct Answer : 9 Explanation : Factors of 3087 here only 3 is not in the cube. Therefore 3 is the only number that is multiplied to make it a perfect cube. |
The smallest number by which 1100 must be multiplied so that the product becomes a perfect square is____. |
| A) 11 B) 5 C) 2 D) 10 Correct Answer : 11 Explanation : Prime factorization of 1100: 1100 = 2 x 2 x 5 x 5 x 11 In order to make it a perfect square, 1100 should be multiplied by 11 1100x11 = 2² x 5² x 11 x 11 = 2² x 5² x 11² = 12100. |