Question 95

Complete the series.
2, 5, 9, 19, 37,(...)

Solution

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2, 5, 9, 19, 37,(...)

$$2\times 2 + 1 = 5$$

$$5\times 2 - 1 = 9$$

$$9\times 2 + 1 = 19$$

$$19\times 2 - 1 = 37$$

so,

$$37\times 2 + 1 = 75$$

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