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sweetshiva9963
 one year ago
How many strings of three decimal digits (0, 1, 2, …, 9)
a) do not contain the same digit three times?
b) begin with an odd digit?
sweetshiva9963
 one year ago
How many strings of three decimal digits (0, 1, 2, …, 9) a) do not contain the same digit three times? b) begin with an odd digit?

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tcarroll010
 one year ago
Best ResponseYou've already chosen the best response.4Consider that there are 10 x 10 x 10 total strings of 3digit numbers (if you allow leading 0's) There are only 10 where all digits are the same (all 0's through all 9's) So, you have: 10 x 10 x 10  10 strings where you don't have 3 identical digits. As for your second question, there are: 5 x 10 x 10 that start with an odd digit which happens to be the same as the number that start with an even digit.

tcarroll010
 one year ago
Best ResponseYou've already chosen the best response.4All good now, @sweetshiva9963 ?

tcarroll010
 one year ago
Best ResponseYou've already chosen the best response.4Ok! Glad I was able to help you! @sweetshiva9963

tcarroll010
 one year ago
Best ResponseYou've already chosen the best response.4Good luck to you in all of your studies and thx for the recognition! @sweetshiva9963

sweetshiva9963
 one year ago
Best ResponseYou've already chosen the best response.0your welcome. Thanks for the help
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