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8 December, 19:38

A pattern starts with 1. The second number is a 9. The third is a 17. Fourth is a 25 and fifth is 33. If you double the 15th number in the pattern, will the result be even or odd

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  1. 8 December, 20:58
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    the number number will be even

    Common difference is 8

    an = a1 + d (n-1)

    a15 = 1 + 8 (15-1)

    a15 = 1 + 8*14

    a15 = 1 + 112

    a15 = 113

    double it 226

    even number
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