Question

1^2 +2^2+3^2 +....+(n-1)^2 = a.) n(n+1)/6. b.) n(n+1)/2. c.) (n-1)n(2n-1)/6. d.) n(n-1)/2.​

Answer 1

Answer:The duty of the muqtis was to lead military campaigns and maintain law and order in their iqtas.

Answer 2

Answer:

Let p(n) = 1^2 + 2^2 + 3^2 + .... + n^2 = n(n + 1) (2n + 1)6 for n = 1 LHS = 1^2 = 1 RHS = (1) (1 + 1) (2 × 1 + 1)6 = 1 × 2 × 36 = 1 LHS = RHS P(n)