Question

Asked Sep 19, 2019

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Out of an urn containing 8 green marbles and 10 blue marbles, three marbles are drawn in succession. Find the probability that all barbles are blue if

(a) replacement is allowed

(b) no replacement is allowed

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Step 1

**Solution:**

We are given that an urn contains 8 green marbles and 10 blue marbles.

(a) The probability of all three marbles are blue if replacement is allowed

Step 2

(b) Probability of all three marbles are blue if replacement is not allowed.

So here the marble will not be replaced back to an urn. So we will have 18 marb...

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