Question

Find gratest number which divides 90,115and 140 completely

Answer 1

Required number is the highest common factor of the given numbers.

90 = 2 × 3 × 3 × 5

115 = 5 × 23

140 = 2 × 2 × 5 × 7

HCF (90, 115, 140) = 5

Required number = 5

Answer 2

Hii friend,

Prime factorisation of 90 = 2 × 3 × 3 × 5

Prime factorisation of 115 = 5 × 23

Prime factorisation of 140 = 2 × 2 × 5 × 7

HCF of 90, 115 and 140 = 5

Hence,

5 is the greatest Number which Divides 90,115 and 140.

HOPE IT WILL HELP YOU..... :-)