Multiple Choice Questions

The HCF of two numbers is 4 and the two other factors of LCM are 5 and 7 Find the smaller of the two...........

Quantitative Aptitude (RRB NTPC) LCM, HCF

The HCF of two numbers is 4 and the two other factors of LCM are 5 and 7. Find the smaller of the two numbers.

Let the two number be 4x and 4y

LCM = 4 x 5 x 7

Since x and y are coprime numbers

x = 5 and y = 7

smaller number = 4 x 5 = 20

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