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math

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The "wapple" of a number is defined as the number of positive odd intergers less than that number.

1. what is the wapple of 19?

2.If the wapple of x is equal to 5, what is the wapple of x + 6?

  • math -

    using w(x) for wapple of x,

    w(19) = 9 since the odds less than 19 are 1,3,5,7,9,11,13,15,17

    between x and x+6 are 3 odd numbers, so
    w(x+6) = w(x)+3 = 8

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