21. Which of the following sets is not closed under
subtraction?
(a) N
(b) z
(c) Q
(d) R
Answers
Answered by
2
Answer:
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.
Answered by
1
Answer:
N is the correct answer
Step-by-step explanation:
N means natural numbers which are not closed under subtraction
Similar questions