What is the next number in the series : 3, 24, 75, 175, 342, ?
3 24 75 175 342 593 21 51 100 167 251 30 49 67 84 19 18 17 -1 -1
What is the next number in the series - 3, 76, 49, 24, 59, ??
find the next number in following series: 16,21,26,26,12,??