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Probability
Probing the prob. (
Posted on 20140121
)
Chose at random two
distinct
decimal digits.
Denote them as
A & B
.
1. What is the probability that:
AB is less than A+B?
2. Same question, but with the word
"distinct"
erased.
See The Solution
Submitted by
Ady TZIDON
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Comments: (
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)
2nd question first (spoiler)
 Comment 1 of 5
AB < (A + B) if A or B is 0 or 1, unless they are both 0.
Part 2)
Probability, if A and B can be the same =
This is 35 ways out of 100 = .35
Part 1)
Probability, if A and B are distinct =
34 ways out of 90 = .377..
I haven't checked this result, so I might need to be corrected
Posted by
Steve Herman
on 20140121 10:25:18
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