**Download NCERT Solutions For Class 10 Maths Chapter 5 Exercise 5.3 – Arithmetic Progressions. This Exercise contains 20 questions, for which detailed answers have been provided in this note. In case you are looking at studying the remaining Exercise for Class 10 for Maths NCERT solutions for other Chapters, you can click the link at the end of this Note.**

**1. Find the sum of the following APs.**

**(i) 2, 7, 12, …. to 10 terms.**

**Solution: **

For this A.P.

a = 2

d = 7-2 = 5

Number of term (n) = 10

As we know that,

S_{n} = [2a+(n-1)d]

S_{10} = [2×2+(10-1)5]

S_{10} = 5[4+45]

S_{10} = 245