The combination for a lock uses three of
the digits 1, 2, 3, and 4.
a) How many three-digit c...
Mathematics, 26.05.2021 01:00 theldunn
The combination for a lock uses three of
the digits 1, 2, 3, and 4.
a) How many three-digit combinations can
the lock have? Explain your answer.
b) How many three-digit combinations
can the lock have, if the same digit
cannot be used more than once?
Answers: 2
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