many ways are there to select a three character password in such a way that two characters are upper case letters and the third character is a numerical if the first two characters could be either up...

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many ways are there to select a three character password in such a way that two characters are upper case letters and the thi

math Statistics-And-Probability

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Answer 1

Answer #1

When only uppercase character are used, number of options for first and second characters = 26

Number of options for third character = 10

Number of ways to select three character password = 26² x 10

= 6,760

When both uppercase and lowercase character are used, number of options for first and second characters = 26x2 = 52

Number of options for third character = 10

Number of ways to select three character password = 52² x 10

= 27,040

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Answer 2

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many ways are there to select a three character password in such a way that two characters are upper case letters and the third character is a numerical if the first two characters could be either up...

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