Question -
Answer -
9 = A + B
9 = 1 + 8 or 2 + 7 or 3 + 6 or 4 + 5 or 8 + 1 or 7 + 2 or 6 + 3 or 5 + 4 or 0 + 9 or 9 + 0
Now 0 is required at unit place
2 + A = 10
тЗТ A = 10 тАУ 2 = 8
B = 9 тАУ 8 = 1
1 + 6 + 1 (carried on) = A = 8
Hence A = 8 and B = 1