Question

Can a number of a set also be an element of more than one subset? Explain

Answer 1

Answer: Yes it is possible

Here's an example

Original set = {1,2,3,5,7,11}

Subset A = {1,2,3}

Subset B = {3,5,7}

The number 3 is in both subsets A and B.

{1,2,3} is a subset of {1,2,3,5,7,11} since 1,2, and 3 are part of the original set. Similar reasoning applies to subset B as well.

Something like {1,2,9} is not a subset because 9 is not found in the original set.