Question

find the hcf and lcm of 12,21and15 ​

Answer 1

Answer:

Hcf=3

Lcm=420

Step-by-step explanation:

Answer 2

3

H.C.F of 12, 15 and 21 = 3

[HCF(Highest Common Factor) of two or more numbers= Product of the smallest Power of each common prime factor involved in the numbers.

lcm=420