Q.

If GCD of two number is 8 and LCM is 144, then what is the second number if first number is 72?

A. 24
B. 2
C. 3
D. 16
Answer» D. 16
Explanation: as a * b = gcd (a, b) * lcm (a, b). so b = (144 * 8)/72 = 16.
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