# iacs Interview Questions

###### What is the least number to be subtracted from 696 to make it a perfect square? A. 10 B. 20 C. 30 D. 40
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###### If a : b = 3 : 4, b : c = 7 : 9, c : d = 5 : 7, find a : d? A. 12:5 B. 5:12 C. 5:10 D. 10:5
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###### What is the derivative of f(x) = | x | at x = 0 A. 0 B. 1 C. -1 D. Does not exist
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###### Angles are measured from the positive horizontal axis, and the positive direction is counterclockwise. What are the values of sin B and cos B in the 4th quadrant? A. sin B > 0 and cos B < 0 B. sin B < 0 and cos B < 0 C. sin B > 0 and cos B > 0 D. sin B < 0 and cos B > 0
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###### Ten years ago, P was half of Q’s age. If the ratio of their present ages is 3 : 4 , what will be the total of their present ages? A. 30 B. 35 C. 40 D. 45
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###### In one km race A beats B by 4 seconds or 40 metres. How long does B take to run the kilometer? A. 25 sec B. 50 sec C. 75 sec D. 100 sec
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