The 10 most common passwords in 2018 were found to be

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123456 2.79%

Password 1.78%

123456789 0.82%

12345678 0.76%

12345 0.63%

111111 0.41%

1234567 0.39%

Sunshine 0.10%

Qwerty 0.11%

I love you 0.10%

(a) What is the proportion of users with one of these passwords?

(b) If a hacker knows that your password is on this list and contains eight characters, what is the probability yours is selected?

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