The probability that marble is small or white is 25/29.
Probability is the ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes.
How to find If a marble is randomly selected from the box, what is the probability that it is small or white?
Given A box contains 19 large marbles and 10 small marbles.
Each marble is either green or white.
8 of the large marbles are green, and 4 of the small marbles are white.
Then P(s or w) = P(s) +P(w)
and P(s)=10/29
P(w)=11+4/29 = 15/29.
So, P(s or w) = P(s) +P(w)
=> P(s or w) = 10+15/29
=> 25/29.
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