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NNADVOKAT [17]
3 years ago
14

You have been assigned a 9-digit identification number. How many identification numbers are possible?

Mathematics
1 answer:
Rasek [7]3 years ago
3 0
Permutations are all possible variations, in which a set of numbers or characters can be ordered. <span>The number of permutations on a set of </span><span> n elements is given by </span><span> n!. </span>In our case we have 9 digits, which means 9 elements. 
There are 9!=9*8*7*6*5*4*3*2*1=362880 possible variations, or 362880 possible identification numbers.
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