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5 December, 21:57

What is the missing number in this sequence? 3,7,15, 63, 127

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  1. 5 December, 23:34
    0
    31

    Step-by-step explanation:

    3 times 2 is 6, plus 1 is 7

    7 times 2 is 14, plus 1 is 15

    15 times 2 is 30, plus 1 is 31

    31 times 2 is 62, plus 1 is 63

    63 times 2 is 126, plus one is 127

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