HEREDITY
BASICS OF PROBABILITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There are 2 violet balls and 4 pink balls in a bag. If two balls are drawn one after the other, then what is the probability of getting violet first and pink next, if the first ball drawn is replaced?
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1/3
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2/9
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1/6
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1/4
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Explanation:
Detailed explanation-1: -probability of drawing two balls of the same colour=2010×10= 2! 20! 10×10=100=1910.
Detailed explanation-2: -Note that there are 16 total marbles. A is simply a set of sequential events. On the first, you have 10/16 chances to draw a red. Supposing this red is not replaced, the chance of drawing a second red will be 9/15; therefore, the probability of A is (10/16) * (9/15) = 0.375.
Detailed explanation-3: -Which gives a probability of about 38%.
There is 1 question to complete.