asked in Mathematics+IQ challenge by (5 points) 4
replied by LEGEND (8,444 points) 5 15 39
You can do this in excel or manually as follows:

27     diff

54      27     diff

86      32      5       diff

128     42     10      5        diff

187     59     17       7        2        diff

272     85     26       9        2         0

Your number is 128

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1 Answer

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answered by (32 points) 1
27 54 86     187 272

   27  32   x    y 85

        5    10 15 30

5^2+5, 5^2+60 in between terms-5^2+17=42 so, next  term is 42+86=128

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