Question

Three of numbers 42m,49m,63m length have to be divided into plank of the same length what is greatest possible length

Answer 1

We should find theirh.c.f
H.c.f of 42,49,63 is 7
. So length is 7 m

Answer 2

hcf of 42m,49m,63m
42 divided by 49 then the hcf is 7
then 7 divided by 63 the hcf = 7
the greatest possible length = 7 m