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    Which of the following terms will replace the question mark (?) in the given series to make it logically complete? TDK-4, XHO-9, BLS-16, FPW-25, ?
    Question

    Which of the following terms will replace the question mark (?) in the given series to make it logically complete?
    TDK-4, XHO-9, BLS-16, FPW-25, ?

    A.

    JTB-36

    B.

    JTA-64

    C.

    JUA-36

    D.

    JTA-36

    Correct option is D

     Given:
    TDK-4, XHO-9, BLS-16, FPW-25, ?
    Logic: The letters in each term increase in their position by +4 for each successive term , The numbers follow a pattern of perfect squares, specifically 32,42,523^2, 4^2, 5^2 ...
    TDK-4:
    ​T+4=X, D+4= H, K+4=O, -(22)(2^2) 
    ​XHO-9
    X+4=B, H+4=L, O+4=S, - (32)(3^2)
    BLS-16 
    B+4=F, L+4=P, S+4=W - (42)(4^2)
    Similarly,
    FPW-25
    F+4=J, P+4=T, W+4= A (52)(5^2), (62)(6^2) = JTA-36
    JTA-36, is correct answer
    Thus, correct option is (d) JTA-36
    ​​​

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