Discrete Math Question?

Posted on 2015-09-25 06:39:00 in Math by CAROLINE

Which of the following statements is (are) true?

a) Every even integer greater than 2 can be written uniquely as the sum of two primes.
b) If an integer can be written as the sum of two primes then it is an even integer larger than 2.
c) If p is a prime number and p divides the product ab then either p divides a or p divides b.
d) Every integer greater than 1 is either prime itself or is the product of prime numbers and this product is unique, up to the order of the factors

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