Select the number from the given options that can replace the (?) in the following alphanumeric series.
Q, 18, S, 16, U, 13, W, ?
1
8
2
9
3
6
4
7
Select the number from the given options that can replace the (?) in the following alphanumeric series.
Q, 18, S, 16, U, 13, W, ?