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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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