If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 1845637, what will be the sum of the digits that are second from the left and second from the right?​

Given: 1845637

Add 1 to each odd digit and subtract 2 from each even digit

1 → odd → 1 + 1 = 2.

8 → even → 8 − 2 = 6
4 → even → 4 − 2 = 2
5 → odd → 5 + 1 = 6
6 → even → 6 − 2 = 4
3 → odd → 3 + 1 = 4
7 → odd → 7 + 1 = 8

New formed number: 2 6 2 6 4 4 8

Second from the left = 6

Second from the right = 4

Sum:

= 6 + 4

= 10

So, 10 will be the sum of the digits that are second from the left and second from the right.

Thus, correct option is (b).