Question

What should come in the place of the question mark(?) in the given series ? 14 23 42 71 110 ?

• A. 180
• B. 164
• C. 172
• D. 159

Answer 1

Answer:

D. 159

Let’s look at the pattern in the differences.

Given series

14, 23, 42, 71, 110, ?

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• 23 − 14 = 9

• 42 − 23 = 19

• 71 − 42 = 29

• 110 − 71 = 39

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Differences:
$9,\ 19,\ 29,\ 39$

These are increasing by 10 each time.

So the next difference = 49

next term

$110 + 49 = 159$