Question

If the number A3640548981270644B is divisible by 99 then the ordered pair of digits (A,B) is :-

Answer 1

Do you know divisibility tests for 9 and 11
99 =9 * 11
So,
A number divisible by 99 should be divisible by both 9 and 11

Answer 2

I don't know if we will reach the answer but there is no harm in trying
Well,
Do you know them

Answer 3

i can do it now...thanks

Answer 4

No problem in the last you will get two simultaneous equations and then you will get
A and B !

Answer 5

hey are you preparing for iit