Permutations without Repetition


Collapse Content

Permutations with repetition was a simple formula: NxN... or NE. But what happens if you cannot reuse any elements? For example, let's say only 3 students entered the poetry contest you are judging. How many possible ways are there to award 1st, 2nd and 3rd place?

Click for More

Challenge

The ForceBall Lottery uses 12 balls numbered 1-12. Each ball spins in a machine until it pops out. How many possible orders are there (for the balls to pop out) in the ForceBall Lottery?

Please sign in or sign up to submit answers.

Alternatively, you can try out Learneroo before signing up.

Comments

Contact Us
Sign in or email us at [email protected]