In the lock above there are 10 numbers to choose from 0123456789 and we choose 3 of them. Introductory combination problems like if you have 5 friends and can pick 2 of them to join you on a boat ride how many different groups of friends could you take with you. Calculating Combinations Without Repetition 1.
To eliminates those counted more than once because the order is not important.
Combination Problems With Solutions. To eliminates those counted more than once because the order is not important. A Using the formula. 10 10.