Question

find the sum of first 30 term of the AP 1 + 5 + 9 + 13 ​

Answer 1

Step-by-step explanation:

I hope you would understand this

Answer 2

Answer:

a=1

d=2nd term - a

=5-1

=4

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

=30/2*(2*1+(30-1)4)

=15*(2+116)

=15*118

=1770(answer)