2 years ago

how many four digit natural numbers can be formed using the digits 1,2,3,4 if repitition is not allowed

2 answers:

7 0

24 - (4x3x2x1 = 24) look it up online if you need more verification :)

5 0

Your answer is 16 because there’s only 4 numbers without repetition those numbers can be used 4 times so 4x4

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