Question

write the formula of the sum of first
of first in terms for an Ap​

Answer 1

Step-by-step explanation:

I don't know Bro sorry bro

Answer 2

Step-by-step explanation:

Sn = n/2[2a + (n-1)d]

where, n = no. of terms

a = 1st term of an AP

d = common difference of an AP.

OR

Sn = n/2(a + l)

where, n = no. of terms.

a = 1st term of an AP.

l = last term of an AP.

HOPE ITS WILL BE HELPFUL