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What should come in place of the question mark (?) in the given series?49, 55, 63, 73, 85, 99, ?
Question

What should come in place of the question mark (?) in the given series?
49, 55, 63, 73, 85, 99, ?

A.

129

B.

115

C.

120

D.

111

Correct option is B

Series: 49, 55, 63, 73, 85, 99, ?
Logic: Differences: 6, 8, 10, 12, 14 → increasing by +2 each time.
55 − 49 = 6
63 − 55 = 8
73 − 63 = 10
85 − 73 = 12
99 − 85 = 14
Next difference = 14 + 2 = 16
99 + 16 = 115
Thus, correct option is (b).

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