Find the wrong number in the series.
1, 2, 6, 15, 31, 56, 915
4740 5b5cc7c6e4d2b41977750d3c
Q: Find the wrong number in the series. 1, 2, 6, 15, 31, 56, 91
- 131false
- 215false
- 356false
- 491true
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