A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
IGS, MFX, QEC, UDH, ?
Show answer & explanation
Correct answer: C
Explanation
Series: IGS, MFX, QEC, UDH, ?
Pattern for the first letters
First letters: I, M, Q, U, ?
Positions in the alphabet:
I = 9, M = 13, Q = 17, U = 21
Pattern: +4 each time.
Next letter: 21 + 4 = 25 → Y
Pattern for the second letters
Second letters: G, F, E, D, ?
Positions:
G = 7, F = 6, E = 5, D = 4
Pattern: -1 each time.
Next letter: 4 - 1 = 3 → C
Pattern for the third letters
Third letters: S, X, C, H, ?
Positions:
S = 19, X = 24, C = 3, H = 8
Pattern: +5 each time
8 + 5 = 13 → M
So, the missing term is YCM.
Hence, the correct answer is option (3).