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    jchalk's Avatar
    jchalk Posts: 2, Reputation: 1
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    #1

    Aug 7, 2008, 09:12 AM
    Number games
    What comes next in this sequence

    1/12, 1/6, 1/3, 2/3 ? (3/4, 4/3 or 3/2)


    What should come next in this sequence

    1, 2, 0, 3, -1 ? (5, 4 0r -3)
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Aug 7, 2008, 09:29 AM
    Here are a couple of hints:

    For the first sequence, look at the ratio of one number to the next - each is twice as big as the one before.

    For the second sequence, look at the difference between each number and the next. You will see that the differences form a pattern of +1 -2 +3 -4...
    Rehaan_genius's Avatar
    Rehaan_genius Posts: 49, Reputation: 1
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    #3

    Aug 10, 2008, 08:25 AM
    first one is a GP(geometric progression) having common ratio r=2 and first term a=1/12
    and you want to find n=5th term of the series so just apply the formula for
    5th term=ar^5-1 and you will get the answer, i.e. 4/3.
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