Question

Find the number of terms in the AP: 7, 10, 13, ........151.​

Answer 1

Step-by-step explanation:

In the given AP: a=7,. d=a2-a1=10-7=3,. an=151

To find: n=?

An=a+(n-1)d

151=7+(n-1)3

151-7=(n-1)3

144/3=(n-1)

48+1=49=n.

There are 49 terms.

Answer 2

Answer:

answer attached in photo