The Gateway to Computer Science Excellence
0 votes
16 views

For all the natural number $n \geq 3, \: n^2+1$ is

  1. divisible by $3$
  2. not divisible by $3$
  3. divisible by $9$
  4. None of these
in Numerical Ability by Boss (16.8k points)
recategorized by | 16 views

1 Answer

0 votes

if we take $n=4$ then $n^2+1=17$ which is not divisible by $3$ and $9$.

So option a and c are eliminated.

Option B. is correct option.

For proof refer this

 

by Boss (21.7k points)
Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
50,645 questions
56,556 answers
195,715 comments
101,580 users