Question

If s1 s2 s3 sn are the sum of n,2n and 3n then which of the following true a)s3 =2(s2-s1) b)s4=2(s3-s1) c)s1+s3=2s2 d)s5-s4=s2​

Answer 1

Answer

b)s4= 2(s3-s1)

so, =s6-s2

s4=s4 is true