The set of Natural numbers is said to be 'CLOSED' under the operation '+' because for any Natural numbers m and n, the number m + n is also a Natural number. Under which operations is the set of Integers 'CLOSED'?
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For the set of natural numbers, multiplication of any two numbers always results in a natural number i.e., a×b∈N, ∀a,b∈N. Hence, the set of natural numbers is closed under multiplication.
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