HCF and LCM Quiz

Find the highest common factor (HCF) of 35 and 91.

Find the Highest Common Factor of 64 and 80

Find the Highest Common Factor (HCF) of 75 and 90.

Find the highest common factor (HCF) of 96 and 120

N=480×109 Write N as a product of powers of its prime factors.

(a)  

Find the lowest common multiple (LCM) of 20, 30 and 45

(a)  

The highest common factor (HCF) of 140 and x is 20 The lowest common multiple (LCM) of 140 and x is 420 Find the value of x.

Given that A=23×3 and B=22×32 find the Lowest Common Multiple (LCM) of A and B.

m=34×53 n=33×52×11 Find the Lowest Common Multiple (LCM) of m and n.

A=25×32×5×17 B=2×34×7 Write down the Highest Common Factor (HCF) of A and B.