Find the next letter in the series: B, F, I, M, P, T, ?
AT
BU
CW
DY
Answer & Solution
Correct answer: C. W
1. Convert to positions: B=2, F=6, I=9, M=13, P=16, T=20.
2. Differences alternate: +4, +3, +4, +3, +4.
3. Next difference is +3, so 20 + 3 = 23.
4. Position 23 is the letter W.
_Source: RRB Group D CEN-02/2018 PYQ, Q.4._
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