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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)

√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 ) } 