1, :( 2, :I 3, :J 4, :) 5. ;)
Probability
Level
2
How many distinct four-digit numbers can be formed using only the digits 1, 2, 3, 4 and 5? Assume also that no digit may be used more than once?
The answer is 120.
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1 solution
Simply do 1 times 2 times 3 times 4 times 5 and you get 120.