Question

Find sum : 22 + 2 * 32 + 3 * 42 + 4 * 52.....10 * 112
6530
3600
2850
3850

Answer 1

22+(2×32)+(3×42)+(4×52)+(5×62)+(6

×72)+(7×82)+(8×92)+(9×102)+(10×112) = 4510