Question

Prove that natural numbers are closed under multiplication but not closed under subtraction and division . give example​

Answer 1

Answer:

The natural numbers are "closed" under addition and multiplication. A set is closed (under an operation) if and only if the operation on any two elements of the set produces another element of the same set. ... The subtraction of two natural numbers does NOT necessarily create another natural number (3 - 10 = -7).

and if u r not satisfied with my answer there is another answer also in the photo