nayiiii1011 nayiiii1011

09-11-2017
Mathematics

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Customer account "numbers" for a certain company consist of 44 letters followed by 33 numbers. step 2 of 2: how many different account numbers are possible if repetitions of letters and digits are not allowed?

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jorel1380 jorel1380

12-11-2017

4 letters x 3 numbers=26x25x24x23x(10 choose 3)=358800 x 120=43,056,000 different account numbers possible
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