Correct option is B
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
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).
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