Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Sets A group of things that have a certain property in common e.g. even numbers 2 4 6 8 10
An element The numbers or objects in a set are called the elements
Cardinal Number # This is the number of numbers within a set. For example Set A has 5 numbers{1,2,3,4,5} and Set B has 3 numbers {2,4,6}
Prime Number This is any number that can be divided by itself and 1 only. Example {2, 3, 5, ...}
Null Set This is a set that has no elements. It is given the symbol {}
Subset When given two sets A and B. If all of the elements of B are also in A, then B is said to be a subset of A. Example Set A {1,2,3,4,5,6,7} and Set B {1,2,3,4,5}; B is a subset of A.
Union of two sets The set of elements contained in both sets
Intersection of two sets The set of elements common to both sets
Universal Set The set that contains all elements
Complement of Set A List all of the elements of the universal set except set A. In other words, all of the elements outside Set A.
A\B This is the set of elements in A but not in B. In other words list A without B.
Created by: Clare Mahon