Question

find the sum of a first 31 terms in an AP​

Answer 1

Answer:

where is the ap

hope it helps you pls mark a brainlist answer pls pls pls

Answer 2

Answer:496

Step-by-step explanation:

a=1, n=31, d=2-1 ,3-2.=1

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

=31/2(2*1+(31-1)1)

=31/2(2+30)

=31/2(32)

=31(16)

Sn=496