| Calculate Sum of Arithmetic Series Terms, Given the First Term, 366, the Common Difference, -17 and the Last Term, -144 | Sep 28 06:06 UTC (GMT) |
| Calculate Sum of Arithmetic Series Terms, Given the First Term, 211/3, the Common Difference, -15/7 and the Last Term, 172/21 | Sep 28 06:06 UTC (GMT) |
| Calculate Sum of Arithmetic Series Terms, Given the First Term, 12, the Common Difference, -16 and the Last Term, -708 | Sep 28 04:10 UTC (GMT) |