TOPIC 8 - Permutations and Combinations

Example: in the lock above, there are 10 numbers to choose from (0,1,..9) and you choose 3 of them: So, the formula is simply: nr. where . n. is the number of things to choose from, and you choose . r. of them (Repetition allowed, order matters) 2. Permutations without Repetition. In this case, you have to . reduce. the number of available ... ................
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