Homework Help: Maths

Posted by Rupa on Wednesday, January 11, 2012 at 9:06pm.

M says that every number in the nineties is composite.J says that one number in the nineties is prime. who is correct?

Maths - Steve, Thursday, January 12, 2012 at 5:52am
all the evens are composite
91 + 7*13
95 = 19*5
97 is prime
99 = 9*11

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