Question

if the seven dight number 56x34y4;is divisible by 72 find the sum of XY​

Answer 1

hey mate

here goes your answer

the divisibility test of 72 says that the +xno. should be divisible by 8 and 9

the divisibility test of 8 says that the last three digits should be divisible by 8

so, 4y4 should be divisible by 8

y =2

divisibility test of 9 says that some of all digits should be multiple of 9

5+6+×+3+4+2+4=24+x

x =3

so, x+y=2+3=5

hope it helps u ..

this is the least possible value of x+y