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    hmmartin's Avatar
    hmmartin Posts: 1, Reputation: 1
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    #1

    Jun 3, 2010, 10:40 AM
    What would be the next number in this series -3 6 -18 72 -360.
    What would be the next number in this series? -3 6 -18 72 -360
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Jun 3, 2010, 10:47 AM

    Successive multiplication is done using consecutive natural numbers, and then alternating signs.



    Let n=6 to find the next number.

    You're welcome.
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #3

    Jun 4, 2010, 09:54 AM

    Yes, I am sure you knew it but did not notice. On my Voyage 200, if I

    type in, it gives

    .

    Which, as you probably know, is the Euler formula



    Therefore,

    It would appear we like this post more than the OP, for they never returned.:rolleyes:
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