Question

If tn =3n+2 find the sum of ots 30th term........

Answer 1

Answer:

Step-by-step explanation:

tn=3n+2

t1=3+2=5

so a=5

t2=3*2+2=8

so d= t2-t1=8-5=3

so sum of 30 terms

=30/2(2*5+29*3)

=15*(10+87)

=15*97

=1455