Question

Which of the following sets is not closed under subtraction? a)N b) Z c) Q d) R

Answer 1

The set that is not closed under subtraction is b) Z.

• A set closed means that the operation can be performed with all of the integers, and the resulting answer will always be an integer.
• The difference between any two positive integers doesn't always yield a positive integer score.
• Thus Z, which contains sets, is not closed under subtraction.

Answer 2

Answer:

check the explanation

Step-by-step explanation:

the answer is a. N is not closed under subtraction.