PLZ HELP ME I AM SUCK!
Which counterexample disproves the conjecture?
If a perfect square is odd, then its square root is multiple of 3?
A: 4
B: 9
C: 25
D: 81
Which counterexample disproves the conjecture?
If n is a positive integer , then 2n - 1 is a prime number.
A: n = 6
B: n = 5
C: n = 3
D: n = 2
