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Sheldon and Ross

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343 views
Two balls each equally likely to be colored either red or blue, are put in an urn. At each stage one of the balls is randomly chosen, its color is noted, and it is then returned to the urn.if the first two balls chosen are colored red, what is the probability that

a>both balls in the urn are colored red

b>the next ball chosen will be red

how to solve this?
in Probability 343 views
0

a) 0.25 and b) 0.5 ..?


edited by
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For the first one is it 2/3?
0

@prashant  jha 1

yes it is 2/3 for  the first Q.

And  5/6 for the second 

Can you explain how you solved it?

1
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Thanks @MiNiPanda for the link .

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