Sum of n odd natural number is ____

Important Questions on Arithmetic Progressions

EASY

10th Foundation

IMPORTANT

IMO Olympiad Work Book 10>Chapter 5 - Arithmetic Progressions>ACHIEVERS SECTION (HOTS)>Q 20

If sum if n terms of three A.P. are $S_1,S_2,S_3$ . The first term of each is 1 and common difference are $\mathrm{1,} 2, 3$ respectively, then $\frac{S_1+S_3}{S_2}=\_\_\_\_\_\_\_$