(3 x 5) x 7 = 3 x (5 x 7)
Of course, the product will no longer be prime.
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No.
commutative, associative, distributive
The ASSOCIATIVE property for addition states that the order in which the operation is carried out does not matter. Symbolically, (a + b) + c = a + (b + c) and so, without ambiguity, either can be written as a + b + c. Rational numbers are also associative under multiplication.
No. The product of two primes cannot, by definition, be a prime.
They are not the same!The set of integers is closed under multiplication but not under division.Multiplication is commutative, division is not.Multiplication is associative, division is not.