@vzfreakz
Which is a counterexample that disproves the conjecture?

If n is a positive integer, then 2^n – 1 is a prime number.

A.

n = 6

B.

n = 5

C.

n = 3

D.

n = 2

Question

@vzfreakz 
Which is a counterexample that disproves the conjecture?



       If n is a positive integer, then 2^n – 1 is a prime number.
  
 
 

 

 
  

  A. 
 
n = 6
   
   

 

 
  

  B. 
 
n = 5
   
   

 

 
  

  C. 
 
n = 3
   
   

 

 
  

  D. 
 
n = 2

anonymous · Answer

What I would do is plug in the answer choices into n.

anonymous · Answer

We're looking for a number that disapprove in this equation.

anonymous · Answer

What do you think the answer could be?

anonymous · Answer

I keep thinking 6?

anonymous · Answer

Yes!