SOLUTION: using the digits of 0,1,2,3,4,5,6,7,8,9 determine how many 3 digits numbers can be constructed according to the following criteria zero cannot be used for the first digit, digits

Algebra ->  Permutations -> SOLUTION: using the digits of 0,1,2,3,4,5,6,7,8,9 determine how many 3 digits numbers can be constructed according to the following criteria zero cannot be used for the first digit, digits       Log On


   

Question 942820: using the digits of 0,1,2,3,4,5,6,7,8,9 determine how many 3 digits numbers can be constructed according to the following criteria zero cannot be used for the first digit, digits may repeat
Answer by stanbon(75887) About Me  (Show Source):
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using the digits of 0,1,2,3,4,5,6,7,8,9 determine how many 3 digits numbers can be constructed according to the following criteria zero cannot be used for the first digit, digits may repeat
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units digit:: 10 ways
tens digit:: 10 ways
hundreds digit:: 9 ways
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Ans:: # of 3-digit numbers:: 9*10^2 = 900
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Cheers,
Stan H.
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