Question

Find the sum of 5+8+11t to 10 term
using the formula​

Answer 1

Answer:

5 + 8 + 11 +.......10 terms

Its an AP series with

First term, a = 5

Common difference, d = 3

n = 10

Sum of 10 terms =

$\frac{10}{2} (2 \times 5 + (10 - 1) \times 3) \\ = 5(10 + 27) \\ = 5 \times 37 \\ = 185$

Answer 2

Answer:

this is correct...................