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Number of Favorable Outcomes Probability = Total Number of Outcomes Permutation Formula n! Pr = (n-r)! Combination Formula n! nCr = (n-r)!r! If a
Number of Favorable Outcomes Probability = Total Number of Outcomes Permutation Formula n! Pr = (n-r)! Combination Formula n! nCr = (n-r)!r! If a lock code uses the digits 1-8, what is the probability the 4-digit code is 5555? 1/480 1/680 O 1/880 1/1080 1/1280 1/1480
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