Question

find a counterexample for the following statement: x^2 +x+41 is prime

answers:
x=1,x=3,x=5,x=7

Answer 1

a counter example is the one that dosnt work when you plug it in...

Answer 2

when I plug them in they all work
1^2+1+41=43
3^2+3+41=53
5^2 +5+41=71
7^2+7+41=97

Answer 3

oh.

Answer 4

wait

Answer 5

which one of the answers is NOT prime?

Answer 6

all of them are prime

Answer 7

i think that questions wrong..

Answer 8

yeah