Select the alphanumeric-cluster from among the given options that can replace the question mark (?) in the following series.
J(6)K, L(12)M, ?, P(24)Q, R(30)S
1
N(18)O
2
M(20)N
3
N(20)O
4
O(18)N
Select the alphanumeric-cluster from among the given options that can replace the question mark (?) in the following series.
J(6)K, L(12)M, ?, P(24)Q, R(30)S