Alphabet series – choose the next letter in the pattern: B, D, F, I, L, P, ?

Introduction / Context:
This sequence progresses by steadily increasing forward jumps in the alphabet. Recognizing the series of step sizes (+2, +2, +3, +3, +4, +4, …) leads directly to the next letter.

Given Data / Assumptions:

• B(2), D(4), F(6), I(9), L(12), P(16), ?
• Exactly one continuation is required.

Concept / Approach:
Calculate letter-position differences and look for repetition: often a pair of equal steps repeats before the step size increases by 1 and repeats again (a “2,2,3,3,4,4…” motif).

Step-by-Step Solution:
B → D: +2; D → F: +2.F → I: +3; I → L: +3.L → P: +4; therefore, the next should also be +4.P(16) + 4 = 20 = T.

Verification / Alternative check:
Continuing the scheme would then move +5 twice for later steps, which is a common reasoning-test structure. Our result T fits perfectly into the current pair of +4 jumps.

Why Other Options Are Wrong:

• R (+2) or S (+3) under-shoot the intended +4 repeat; U (+5) jumps too far for this step; Q (+1) does not match the pattern at all.

Common Pitfalls:

• Forgetting that each step size repeats twice before increasing, leading to picking +5 prematurely.

Final Answer:
T