Question

Which of the following can not be the sum of n terms of an A. p.
A) 2n square +3n
B) 7n square +8
C) n square +3n-1
D) 8 n square +5n
More than one answer can exist​

Please please and please answer it fast please

Answer 1

Answer:

c) n square+3n-1 is not be the sum of n terms in a.p