Due in 4 hours, 60 minutes. Due Sun 02/25/2018 11:59 pm that the password is 10

Question

Due in 4 hours, 60 minutes. Due Sun 02/25/2018 11:59 pm that the password is 10 characters long, and that each character is either a lowercase A hacker is trying to guess someone's password. The hacker knows ( letter, (a, b, c, etc), an uppercase letter (A, B, C, etc) or a numerical digit (0, 1,2,3,4,5,6, 7, 8, or 9) Assume that the hacker makes random guesses What is the probability that the hacker guesses the password on his first try? Enter your answer as a decimal or a fraction, not a percentage. /10) 10) Get help: 10) 10) /10) 0/10) (0/10) O/10) 2 (0/10) Submit 3 (0/10) 14 [10/10] 15 (0/10) 16 (0/10) 17 (0/10) 218 (0/10) Q19 (0/10) Q 20 (0/10) Q 21 O/10) Q 22 (0/10) ade: 70/220 Points possible: 10 Score on last 0. Score in gradebook: 0

Explanation / Answer

a) here for each charecter has 26+26+10=62 choices threfore probability =1/6210 ( please revert on this mathematical expression if found not ok please revert)

b)

there are total 12 division out of which 8 are greater than 4

hence P(X>4) =8/12 =2/3

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