Question

If A679B is a 5-dit number is divisible by 72 find ‘A’ and ‘B’?

Answer 1

Step-by-step explanation:

72=8×9

when last 3 digit is divisibel by 8 than number is divisibel 8 and the sum of the digit is also divisibel by 9 than number is also divisibel so best fitted value are a=4 or b=2

Answer 2

Answer:

given : A679B/72

so, let A679B/8*9

if A679B is divisible by 8

take last three digits

79B/8

8*9=72

remain 7

so B should be(2) and u get 99

Now, to find A

if we have 3 digits no. abc divisible by 9

we can write it as a+b+c/9

so add the 5digit nos.

A+6+7+9+2/9

=24+A/9

so A should be 3

you'll get answer divisible by 9