+0  
 
0
109
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avatar+586 

In how many ways can the digits of  be arranged to form a 5-digit number? (Remember, numbers cannot begin with 0.)

 Oct 18, 2018
 #1
avatar+316 
0

Its 5! = 1*2*3*4*5 = 120 different numbers with 5-digit numbers!

 Oct 18, 2018
 #2
avatar+4423 
+2

If you are strictly enforcing 5 digits, as in no number can start with any number of zeros.

 

Then we have 

 

\(n = 9 \cdot 10^4 = 90000\)

.
 Oct 18, 2018
 #3
avatar+316 
+1

He means with all numbers i understand with 5 numbers all the posible numbers we can take.I'm sorry ! :(

Dimitristhym  Oct 18, 2018

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