Find the missing number.
$2, 5, 9, 19, 37, . . . .$

76

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75

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74

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72

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Solution

The correct option is D $75$
Here, the pattern is as follows:
$2 \times 2 + 1 = 5$
$5 \times 2 - 1 = 9$
$9 \times 2 + 1 = 19$
$19 \times 2 - 1 = 37$
$37 \times 2 + 1 = 75$
Hence, the correct answer is $75$ .

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