Question

The sum of first n terms of three A.Ps are S 1 ,S 2 and S 3 . The first term of each is 5 and their common differences are 2,4 and 6 respectively. Prove that S 1 +S 3 =2S 2

Answer 1

Step-by-step explanation:

s1=56

s2=58

s3=60

s1+s3=2s2

56+60=2×58

116=116

so its correct