Posted by bobby on Friday, December 17, 2010 at 10:19pm.
converse
if n+1 is even, then n is prime (not necessarily so false)
if n = 9 then n+1 is even
but 9 = 3*3
contrapositive
if n+1 Is not even, then n is not prime (true if original statement is true, which it is)
but isnt 2 a prime # so 2+1=3 = odd
Good thinking.
I suspect that the original hypothesis should have stated greater than 2. That does not impact this problem because it is only asking for the converse and contrapositive.
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