Question

The nth term of 70, 130, 190 is ?

Answer 1

Answer:

250

is the nth term of 70,130,190

Answer 2

Answer:

a=70

d=a2-a1

d=130-70

d=60

an=a+(n-1)d

190=70+(n-1)(60)

190-70=(n-1)(60)

120=60n-60

120+60=60n

180=60n

180/60=n

3=n

n=3