Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
FW, JS, ?, RK, VG
- AMO
- BMP
- CNO
- DNP
Solution & Step-by-step Explanation
Let's split the letter pairs into two separate series for the first and second letters:
First Letter Series: F, J, ?, R, V
F(6)
+4
J(10)
J(10)
+4
N(14)
N(14)
+4
R(18)
R(18)
+4
V(22)
The missing first letter is N.
Second Letter Series: W, S, ?, K, G
W(23)
−4
S(19)
S(19)
−4
O(15)
O(15)
−4
K(11)
K(11)
−4
G(7)
The missing second letter is O.
Combining them, the missing cluster is NO.
First Letter Series: F, J, ?, R, V
F(6)
+4
J(10)
J(10)
+4
N(14)
N(14)
+4
R(18)
R(18)
+4
V(22)
The missing first letter is N.
Second Letter Series: W, S, ?, K, G
W(23)
−4
S(19)
S(19)
−4
O(15)
O(15)
−4
K(11)
K(11)
−4
G(7)
The missing second letter is O.
Combining them, the missing cluster is NO.