Select the letter cluster from among the given options that can replace the question mark (?) in the following series.
GA, MU, SO, ?, EC
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. YI.
The series follows this pattern:
G + 6 = M; M + 6 = S; S + 6 = Y; Y + 6 = E
A - 6 = U; U - 6 = O; O - 6 = I; I - 6 = C