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Mathematics 19 Online
OpenStudy (anonymous):

an email consists of the lower case litters followed by two digits. find the number of passwords possible if the first letter cannot be x, y , z

OpenStudy (anonymous):

please help!!!

OpenStudy (anonymous):

homework almost due!!!

OpenStudy (anonymous):

23 * 10 * 10

OpenStudy (anonymous):

no thats not it

OpenStudy (anonymous):

oh wait, how many characters are the passwords?

OpenStudy (anonymous):

can you have two of the same consecutive numbers?... like j99

OpenStudy (anonymous):

i was thinking 23*10*9

OpenStudy (anonymous):

there is some information you left out

OpenStudy (anonymous):

5 lowers case letters

OpenStudy (anonymous):

sorry

OpenStudy (anonymous):

23 * 26 * 26 * 10 * 10

OpenStudy (anonymous):

23*26*26*26*26*10*10

OpenStudy (anonymous):

oh 5 letter case letters, not 5 characters. yep 23 (26)^4 (10)^2

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