Q4 of 114 Page 38

LCM of (23× 3 × 5) and (24× 5 × 7) is

LCM of the given numbers = product of prime factors with highest powers = 24× 5 × 7 × 3 = 1680.

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2

If a = (22× 33× 54) and b = (23× 32× 5) then HCF (a, b) = ?

 3

HCF of (23× 32× 5), (22× 33× 52) and (24× 3 × 53× 7) is

 5

The HCF of two numbers is 27 and their LCM is 162. If one of the numbers is 54, what is the other number?

 6

The product of two numbers is 1600 and their HCF is 5. The LCM of the numbers is