If a five-digit number 7xy73 is divisible by 99, then find the value o

1.	If a five-digit number 7xy73 is divisible by 99, then find the value of (3x + 2y).
Answer» Step-by-step explanation: 7a3b5 DIVISIBLE by 99. Means, 7a3b5 divisible by 9. And 7a3b5 divisible by 11. For divisibility by 9, we have, 7+a+3+b+5=15+a+b. To make it divisible by 9. The POSSIBLE value will be 1 and possible value of b be 2. Hence 71325 would be the No. but it is not divisible by 11. Hence whatever be the value of (a,b) . It will not SATISFY both condition i.e, It should be divisible by 9 and 11.

If a five-digit number 7xy73 is divisible by 99, then find the value of (3x + 2y).

Answer»

Step-by-step explanation:

7a3b5 DIVISIBLE by 99.

Means, 7a3b5 divisible by 9.

And 7a3b5 divisible by 11.

For divisibility by 9, we have,

7+a+3+b+5=15+a+b.

To make it divisible by 9.

The POSSIBLE value will be 1

and possible value of b be 2.

Hence 71325 would be the No.

but it is not divisible by 11.

Hence whatever be the value of (a,b) . It will not SATISFY both condition i.e, It should be divisible by 9 and 11.