Question

025. The sum of the series 3.5+7+10.5+ 14 + .... to 17 terms is

Answer 1

Answer:

sum of the series = 535.5

Step-by-step explanation:

Given series is an A.P. series

1st term = 3.5 = a

Common Difference = d = 7-3.5 = 3.5

Summation formula of A. P. = n÷2 {( 2a+ (n-1)d}

= 17÷2 {(2×3.5 +(17-1)×3.5)}

= 17÷2 {(7+56)}

= 535.5

Here, n = total number of term .