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anonymous
 one year ago
a key code must contain 4 letters and 3 numbers. the letter maybe any letter of the alphabet the number should be any number from 0 to 9.how many different keycode combunations are there
anonymous
 one year ago
a key code must contain 4 letters and 3 numbers. the letter maybe any letter of the alphabet the number should be any number from 0 to 9.how many different keycode combunations are there

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0you need to find 26P4 for the letters and 10P3 for the numbers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well, If the numbers all go first it will be 6^3*26^4 Now if they are all mixed up you are testing me. Probability is a bit of a joke on this forum. Now let me see. there are 7 items in the code. I'm going for 7C3*6^3*26^4 =

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0 these are the number of permutations

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0one thing i'm assuming that you cant have duplicate letters and numbers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do 1/26*1/25*1/24*1/23*1/10*1/9*1/8 cross multiply that so do 1*1*1*1*1*1*1=1 and what is 26*25*24*23*10*9*8 @thisotherliz

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0if repetitions are allowed then for the letters there are 26^4 permutations for the numbers its 10^3

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0so total possible combinations = 26^4 * 10^3
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