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How many three digit odd numbers can be formed from the digits 1, 2, 3, 4, and 5 if no digits are to be repeated?

 May 1, 2022
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Choose  any of the odd integers  for the units place   =    3C1 =  3

Then we can choose any of the remaining four and permute them in 2 ways = 4P2   =  12 

 

So

 

3 * 12  =     36   three-digit integers

 

 

cool cool cool  

 May 1, 2022

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