**CBSE NCERT Solutions Chapter 5 Arithmetic Progressions Exercise 5.2 Question 4**

**4. Which term of the AP: 3, 8, 13, 18, ... is 78?**

**Solution: **

Here, First term =

Common difference = d =

**Using formula** , to find nth term of arithmetic progression, **we get**

, {We want to find value of here.}

**It means 16th term of the given AP is equal to 78.**