Question

hcf of 20,30,40 by listing the common factors​

Answer 1

HEY MATE!

HERE IS YOUR ANSWER:

HCF BY PRIME FACTORIZATION:

20=2×2×5×1=2^2×5×1

30=2×3×5×1

40=2×2×2×5×1=2^4×5×1

Now, HCF=product of lowest degree of common factors

So HCF=2×5=10

HOPE IT HELPED ^_^