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naimish's Avatar
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Grrrrrrrrrrrrrrrrrr I hate mathematics
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Kshiteej's Avatar, Join Date: Jul 2009
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Quote:
Originally Posted by neo_vi View Post
I too thought in the same angle. But some thing went wrong

1, 2, 7, 12, 19, 42

The diff b/w 1st and third is 6 (7-1)

The diff b/w 5th and 3rd is 12 (19-7)

So,The diff b/w 7th and 5th should be 18 (37-19) which follows multiples of 6.

Similarly,
the diff b/w 4th and 2nd is 10 (12-2)

the diff b/w 6th and 4th is 30 (42-12)

Your logic would be correct if the 6th number is 32 instead of 42 so that the diff b/w 6th and 4th is 20 (32-12) i.e then 2nd difference series will be 10,20,30 like first difference series 6,12,18.
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naimish's Avatar
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Bad Luck neo_vi, but nice try