1.

(iii) Also,Thus, the total production of TV sets in fEXER1. Find the sum of the following APs:(1) 2, 7, 12, ..., to 10 terms.

Answer»

2,7 ,12so a = 2d = 7-2 = 5so a(n) = 2+ (n-1) 5 = 2 + 5n -5= 5n -3

it's is wrong it's answer is 250

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