Counting Combinations With Repetition Calculator

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Simple online calculator to find the number of combinations with n possibilities, taken r times. These calculations are used when you are allowed to choose an item more than once.

Simple online calculator to find the number of combinations with n possibilities, taken r times. These calculations are used when you are allowed to choose an item more than once.

Code to add this calci to your website

Just copy and paste the below code to your webpage where you want to display this calculator.

Formula: Where, n is the number of types, r is the number (of times) to be chosen.

Counting Combination with repetition calculation is made easier here.