In the following question, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.
W-144, ?, S-100, Q-81, O-64
A
U-121
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B
U-122
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C
V-121
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D
V-128
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Solution
The correct option is A U-121 Option A is the correct answer Explanation In the following series first letter is moved two steps backward and in the number series square of number is taken starting from 12,11,10,9,8...to form next term Hence following the second t term is U-121.