Question

Which set is a proper subset of the counting numbers? {−1,0,1} {5} {0} {1,2,3,…}

Answer 1

Answer:

{5}

Step-by-step explanation:

Set of counting numbers:

Set of numbers you count with, starting from 1. So

C = {1,2,3,4,5,....}

Proper subset of a set:

A proper subset of a set A is a subset B that is not equal to A, that is, all elements of B are in A but A has at least one element that is not in B.

In this question:

The set of counting numbers is C = {1,2,3,4,5,....}

Among the options, {-1,0,1} and {0} are not subsets of C, as they contain elements that are not in C, while {1,2,3,...} is not a proper subset, as it is equals to C. So the correct answer is {5}.