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Mathematical series

  1. Oct 9, 2009 #1
    can anyone see the logic in either of these 2 series?
    i have tried everything and cannot get either
    the X's are the unknowns

    X X 122 21 24 6 10

    X 26 14 X 5 3.5 96
     
  2. jcsd
  3. Oct 9, 2009 #2

    CompuChip

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    I think some terms are missing from the first.
    But it looks like it has something to do with division and addition by the same number.
    For example:
    ...
    61 * 2 = 122
    61 + 2 = 63
    63 / 3 = 21
    21 + 3 = 24
    24 / 4 = 6
    6 + 4 = 10
    10 / 5 = 2
    2 + 5 = 7
    ...
     
  4. Oct 9, 2009 #3
    supposing the 63 is really missing, what is the rule here though a n=? i see the number you multiply by/ add goes 2,3,4,5 but the other number goes 61,61,63,21,24,6,10,2 also you have * for the first and / for the rest

    how about the second series, X 26 14 X 5 3.5 96 ???
     
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