The LCM. of two numbers is 30 and their HCF. is 15. If one of the numbers is 30, then what is the other number?
(A) 30
(B) 25
(C) 15
(D) 20
Answer: (C)
Explanation: Say another number =x
product of two numbers = product of HCF and LCM
x.30 = 15*30
x=15
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