Asked by devee
2 brothers have the same 5-digit pin number consisting of number 7,8 and 9. What is the probability that the existing 2 numbers are the same for the two brothers if there is no repetition?
Answers
Answered by
Reiny
number of possible 5-digit pins
= 3x3x3x3x3
= 243
prob(same) = 1/243
= 3x3x3x3x3
= 243
prob(same) = 1/243
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