either 31 or 13?
Very complicated number sequence of an IQ Test.
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4
jezunknown wrote:
@GoldaA1 why is 4 the answer?
sorry for breaking in...
because the second series is in A.P with common difference 2 as 5+1, 1+6+1, 9+1, 1+9+1+1, 1+2+1+1+5+1+X
now, sum of digits of x should be 4. according to the pattern last number should be a two digit number with '1' as one of it's digit...so I guessed either 13 (1+3) or 31 (3+1)
15
Here is it: 15 124 115 14 121 119, 51 161 191 91 121 151 ?
Its very complicated.