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show that the sum of four consecutive whole numbers is divisible by 2

  • math -

    3 + 4 + 5 + 6 = 18

    18/2 = 9

  • math -

    let the 4 numbers be
    x, x+1, x+2, x+3 , where x is an integer.

    x + x+1 + x+2 + x+3
    = 4x + 6
    = 2(x+3)

    Any integer multiplied by 2 must be even
    or
    If any integer has a factor of 2, it must be even by definition.

  • math -

    The gcf(a,b) = 495 and lcm( a,b) =31,185 Find possible values of a and b if a is divisible by 35 and b is divisible by 81.

  • math - do not piggy-back -

    Kendra,
    piggy-backing on other students' questions has two disadvantages:
    1. Tutors do not get to see your post (as in the present case)
    2. it slows down the other student's getting a response.

    Your other post has been answered here:
    http://www.jiskha.com/display.cgi?id=1322609635

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