what is a subset and will I ever be asked to find what it is in the jc? thanks

TheGamers
A subset is part of a set. So lets say A={1,2,3}. This will have 6 subsets, I know this because I did 2^3(2 to the power of 3) = 8. 3 Is the number elements in a set. So lets say X={1,2} then the number of subsets would be 2^2(2 to the power of 9) = 4.
So lets return to A={1,2,3}, now lets find the subsets.
{}  Null subset is a subset of all sets
{1}
{2}
{3}
{1,2}
{1,3}
{2,3}
{1,2,3}
You will need to know what a subset is and how to find them, they're confusing at the start but you get the hang of them like everything in maths.

Sarah2014
Thank you so much this helped hugely ☺☺

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