SOLUTION: a computer system uses passwords that consist of five letters followed by a single digit. how many passwords consist of three a's and two b's and end in an even digit?
if you forg
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Question 491622: a computer system uses passwords that consist of five letters followed by a single digit. how many passwords consist of three a's and two b's and end in an even digit?
if you forget your password but remember that it has three a's and two b's and ends in an even digit, what is the probability that you will guess the password correctly on the first attempt
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!
Total number of possible passwords having 3 a's and 2 b's and end with an even
digit :[ 5!/(3!*2!) ]* 5 = 50
probability that you will guess the password correctly on the first attempt= 1/50
If any doubt, you are welcome to contact me ...
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