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Asked: 2021-03-06T01:12:00+05:30 In:

GATE MT 2021 Q7. A box contains 15 blue balls and 45 black balls. If 2 balls are selected randomly, without replacement, the probability of an outcome in which the first selected is a blue ball and the second selected is a black ball, is

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10%(A) 3 / 16 ( 2 voters )
80%(B) 45 / 236 ( 16 voters )
5%(C) 1/ 4 ( 1 voter )
5%(D) 3 / 4 ( 1 voter )
Based On 20 Votes

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GATE MT 2021 Q7. A box contains 15 blue balls and 45 black balls. If 2 balls are selected randomly, without replacement, the probability of an outcome in which the first selected is a blue ball and the second selected is a black ball, is
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    1. Copper Student

      Answer:- Option B The image of the solution to the above question is attached below:-  

      Answer:- Option B

      The image of the solution to the above question is attached below:-

       

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