Question

Asked Oct 1, 2019

Assume that the box contains 10 balls: 5 red, 2 green, and 3 blue. Two balls are drawn at random, one after the other without replacement.

What is the probability that the first ball was blue, given that the second was red?

Step 1

The probability that first was blue and given that second was red is,

Subscripts 1 and 2 represent first draw and second draw.

Step 2

Now, the value of *P*(*R*2) is,

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