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    ​What is the tenth letter in the following sequence of letters? B, B, C, D, F, I, N, V​
    Question

    What is the tenth letter in the following sequence of letters?
    B, B, C, D, F, I, N, V

    A.

    D

    B.

    G

    C.

    W

    D.

    Z

    Correct option is A

    Given:

    Sequence: B, B, C, D, F, I, N, V
    Find the 10th letter in the sequence.

    Formula:
    Use alphabet positions and Fibonacci differences:
    Start at position 2 (B), add Fibonacci differences: 0, 1, 1, 2, 3, 5, 8, 13, 21, ...

    Solution:
    B = 2
    Apply differences:
    2 (+0) = 2 → B
    2 (+1) = 3 → C
    3 (+1) = 4 → D
    4 (+2) = 6 → F
    6 (+3) = 9 → I
    9 (+5) = 14 → N
    14 (+8) = 22 → V
    22 (+13) = 35 → 35 - 26 = 9 → I
    9 (+21) = 30 → 30 - 26 = 4 → D

    Final Answer:
    D

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