Question 444912: You have four 1$ bills, two 5$ bills, and one 20$ bill in your wallett. You choose one of the bills at random. Find the odds in favor of and the odds against of choosing a bill greater then 1$.
Answer by Edwin McCravy(20060)   (Show Source):
You can put this solution on YOUR website! You have four 1$ bills, two 5$ bills, and one 20$ bill in your wallett. You choose one of the bills at random. Find the odds in favor of and the odds against of choosing a bill greater then 1$.
You have these 7 bills:
$1, $1, $1, $1, $5, $5, $20
Those 3 which I have colored red are favorable and the
other 4 which I have colored green are not favorable.
So the odds in favor are
(Number of favorable possibilities) : (number of non-favorable possibilities)
So that's 3 favorable ones to 4 unfavorable ones, which is written
3:4
The odds against is just the reverse
(Number of unfavorable possibilities) : (number of favorable possibilities)
So that's 4 unfavorable ones to 3 favorable ones, which is written
4:3
Edwin
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