how many 5 digit numbers can be formed by using 1 2 3 4 5

since we have 5 digits(assume no repeatation) .Therefore possibilities are:

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5 x 4 x 3 x 2 x 1 = 120
12 years agoHelpfull: Yes(5) No(4)
there are 5 numbers..and 5 places(digits)
so with repition=5^5=3025
with out repition=5!=120
12 years agoHelpfull: Yes(2) No(1)
with repetition=5^5
In this case each place has 5 choices,like that we have 5 places so total is 5*5*5*5*5=5^5
with out repetition=5!=120
In this case among 5 places, the first place has 5 choices to fill,second place has 4,3rd has 3,4th has 2 and last place has only one choice,so total numbers formed are 5*4*3*2*1=5!=120
12 years agoHelpfull: Yes(2) No(0)
If repetition is allowed, then
5^5 = 15625
12 years agoHelpfull: Yes(1) No(4)
if repitition allowed then 5x5x5x5x5
if not then 5!
12 years agoHelpfull: Yes(0) No(0)

how many 5 digit numbers can be formed by using 1,2,3,4,5