The odd term out in the series 15, 16, 34, 105, 424, 2124, 12756 is
Question and options
The odd term out in the series 15, 16, 34, 105, 424, 2124, 12756 is
- 105
- 16
- 2124
- 34
Answer and explanation
Correct answer: C - 2124
The rule is term(n+1) = term(n) x n + n: 15x1+1 = 16, 16x2+2 = 34, 34x3+3 = 105, 105x4+4 = 424, 424x5+5 = 2125, 2125x6+6 = 12756. So 2124 should be 2125.
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