National Council of Teachers of Mathematics
Nctm: Illuminations: Bobbie Bear's Vacation Outfits
Help Bobbie Bear figure out how many outfits he could make with his shirts and pants. He can have up to 5 shirts and 4 pants. Figure out all the possible combinations.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Permutations and Combinations
Get independent practice working with permutations and combinations. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
National Council of Teachers of Mathematics
Nctm: Figure This: Combination Locks
If you're good with numbers, then here's a challenge just for you. See if you can figure out how many three number combinations you can make using numbers from 0 to 39. A probability challenge that explores number arrangements. Taken...