Question

Find the greatest number which will divide 45,72,999 leaving remainder as 5,2,9.

Answer 1

solution 45-5=40

72-2=70

:) 999-9=90

now hcf of this no

40=2×2×2×5

70=2×5×7

990=2×5×89

hcf =2×5=10

greatest no is 10