Question

hcf (18, a) = 16 and LCM (18,a) =72 then value of a is

Answer 1

Step-by-step explanation:

lcm * HCF = 1st number * second number

72*16 ,= 18*a

a = 72*16/18

a = 64

Answer 2

Given,

H.C.F(18, a) = 16

L.C.M(18,a) = 72

We know,

==> 18 × a = H.C.F(18,a) × L.C.M(18,a)

==> 18 × a = 72 × 16

==> 18a = 1152

==> a = 1152 / 18

==> a = 64

Hence, Number a is 64