Question

find the sum of all the terms of the arthimetic squance 7,13,19,...,61​

Answer 1

Answer:

340

Step-by-step explanation:

7,13,19,...,61​

First term= 7

Last term= 61

Common difference= 6

Number of terms=1+ (61-7)/6= 10

Sum of terms= 1/2*10*(7+61)= 340