Question

Find the sum of the following APs.
2, 7, 12, ...... to 10 terms.​

Answer 1

Answer:

cd=5

sum =

Step-by-step explanation:

use the equation n/2(f+l)

Answer 2

Given,

a= 2

d= 7-2= 5

n= 10

s10= n/2×{2a+(n-1)d)}

s10= 10/2×{2×2+9×5}

s10= 5×{4+45}

s10= 5×49

s10= 245

HOPEFULLY THIS HELPS MATE.... PLEASE FOLLOW ME....