Question

let S be the set of all integers that can be written as n ^ 2+1 where n is a nonzero integer. which of the following integers is in S.
a. 16
b.28
c.35
d.39
e.50

Answer 1

\[\large n^2+1\]

plugin \(n=1,2,3,\ldots\) in above expression till you get a number in the given options