Question

A 3-digit number 5a2 is added to another 3-digit number 764 to give a 4-digit number 12b6, which is divisible by 11. Then (a+b)=?​

Answer 1

Answer:

Given - a+3=b

3 a 5

+ 9 3 3

12 b 8

for 12b8 to be divisible by 11

(8+2) - (b+1) =0

10-b-1 = 0

9-b = 0

from i a = 6

a+b

6+9

15

I hope it will help u