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The next number in the sequence would be 30.

The general rule is multiply by 2, then add 1.

1 x 2 = 2

2 + 1 = 3

3 x 2 = 6

6 + 1 = 7

7 x 2 = 14

14 + 1 = 15

15 x 2 = 30

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14y ago

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