Total of (13+17+15+11)=56 balls,
out of which 17 are orange and 11 are white.
Assume no replacement of balls.
The first orange: 17 out of 56 (17/56)
The second orange: 16 out of 55 (16/55)
The white: 11 out of 54 (11/54)
The probability of pulling in the given order is the product of the three fractions.
You have a box containing 13 purple balls, 17 orange 15 green and 11 white balls. What is the probability you pull 2 orange balls followed by a white ball?
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