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Which of the following numbers will replace the question mark (?) in the given series?3, 7, 23, 59, ? ,223
Question

Which of the following numbers will replace the question mark (?) in the given series?
3, 7, 23, 59, ? ,223

A.

133

B.

123

C.

143

D.

113

Correct option is B

Given: 3, 7, 23, 59, ? ,223
Logic: The logic is that the differences between consecutive terms follow the sequence of squares of even numbers: 22,42,62,...
The next difference should be 82 = 64
Add, 59 + 64 = 123
So, the missing number is 123
The sequence now becomes:
Thus, the correct answer is (b).

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