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Mathematics 31 Online
OpenStudy (anonymous):

WILL GIVE A MEDAL!!!!!!!! PLZ EXPLAIN TOO. Sally made the conjecture that the sum of any two prime numbers is a prime number. Which equation is a counterexample to her conjecture? A. 3 + 11 = 14 B. 2 + 5 = 7 C. 2 + 11 = 13 D. 15 + 4 = 19

OpenStudy (anonymous):

B 2+5=7

OpenStudy (anonymous):

Wait!

OpenStudy (anonymous):

can u explain it

OpenStudy (anonymous):

A counter example would be a non-prime number so it would be A beucase 14 is not prime

OpenStudy (anonymous):

Prime Numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 etc...

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