Mathematics, 05.05.2020 10:55 johnboat

A locker combination consists of two non-zero digits. The digits in a combination are not repeated and range from 2 through 9.
Event A = the first digit is less than 5
Event B = the second digit is less than 5
If a combination is picked at random, with each possible locker combination being equally likely, what is P(B|A) expressed in simplest form?

A. 1/4
B. 2/7
C. 4/9
D. 1/2

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A locker combination consists of two non-zero digits. The digits in a combination are not repeated a...