SOLUTION: How many five-digit number license plates can be made if (a) first digit cannot be zero and the repetition of digits is not allowed? (b) the first digit cannot be zero, but the r

Question 662236: How many five-digit number license plates can be made if
(a) first digit cannot be zero and the repetition of digits is not allowed?
(b) the first digit cannot be zero, but the repetition of digits is allowed?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

How many five-digit number license plates can be made if

(a) first digit cannot be zero and the repetition of digits is not allowed?

  

(b) the first digit cannot be zero, but the repetition of digits is allowed?

   

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