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Quantitative Aptitude :: H.C.F and L.C.M - Discussion

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Choose the correct option.

Let p and q be two prime numbers such that p is greater than q. If 319 is their LCM then the difference of thrice of q and p is:

A1

B0

C4

D9

Answer: Option (Login/Signup)

Show Explanation

Solution: We know that HCF of two prime numbers is 1.

Product of HCF and LCM = 1 x 319 = 319.

Remember that, Product of two number = Product of their HCF and LCM

pq = 319



Now, co-primes with product 319 are (1,319) and (29,11)

Since p > q, p = 29 and q = 11

Then 3q - p = 3 - 29 = 4.

Asked In :: IBM Global Edge

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