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Sequence

Which number ...

Question

Which number replace question mark in the series 7, 12, 19, ?, 39.

A

29

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B

28

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C

26

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D

24

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Solution

The correct option is B 28
Clearly, the given sequence follows the pattern:
+5, +7, +9 ... i.e., 7 + 5 = 12, 12 + 7 = 19, ...
$∴$ Missing Number = 19 + 9 = 28.
Hence, the answer is (b).

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