Question

hcf of 20 , 30 by listing the common factor​

Answer 1

20=2x2x5

30=2x3x5

so the common factor between them is 2 and 5

hence the hcf is 60

hope it helps you

Answer 2

20=2x2x5
30=2x3x5


So hcf us 2x5
ie 10”