Question

What will come in place of the question mark (?) in the following number series?

81, 90, 108, 135, 171, ?

A 246 Correct Answer Incorrect Answer
B 232 Correct Answer Incorrect Answer
C 224 Correct Answer Incorrect Answer
D 216 Correct Answer Incorrect Answer

Solution

81 + 9 = 90 90 + 18 = 108 108 + 27 = 135 135 + 36 = 171 171 + 45 = 216

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