Question

4,7,10,....are in A.P then sum of 15 term is

Answer 1

Answer:

I don't know the answer bro sorry

Answer 2

Answer:

Take mate

Step-by-step explanation:

a1=4

d=7-4=3

n=15

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

S15=15/2[8+14*3]

=15/2[8+42]

=15/2*50

=15*25

=375