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

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 B $75$
Pattern is $\times 2 + 1 \times 2 - 1 \times 2 + 1 \times 2 - 1$ ....
$∴$ Missing number = $37 \times 2 + 1 = 75$

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Similar questions

\frac{4}{7} - \frac{5}{7^{2}} + \frac{4}{7^{3}} - \frac{5}{7^{4}} + \frac{4}{7^{5}} - \frac{5}{7^{6}} + . . . .

2, 5, 9, 19, 37, . . . .

71, 76, 69, 74, 67, 72, x

2, 5, 9, 19, 37, ?

25 \times 75

26 \times 74

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