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A locker combination has three nonzero digits, and digits cannot be repeated. The first two digits are 1 and 2. What is the probability that the third digit is 3?

would this be 1/7 or 1/6? i'm unsure.
12 years ago

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PsyDAG
Again, as indicated in a later post, we need to know total numbers available on the combination.
12 years ago

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