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03 May 2018, 02:21
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E
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Difficulty:
35%
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Question Stats:
61% (01:01) correct
39%
(01:46)
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A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove marbles one at a time, randomly, what is the minimum number that must be removed to be certain that you have at least 2 marbles of each colour?
A. 6
B. 10
C. 12
D. 16
E. 18
A. 6
B. 10
C. 12
D. 16
E. 18
03 May 2018, 14:54
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No math necessary. If you remove 10 marbles, all of them could be blue. If you remove 16 marbles, all of them could by blue or white. If you remove 18 marbles, you will definitely have at least 2 of each color.
Answer: E
Answer: E
General Discussion
03 May 2018, 02:27
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Bunuel
A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove marbles one at a time, randomly, what is the minimum number that must be removed to be certain that you have at least 2 marbles of each colour?
A. 6
B. 10
C. 12
D. 16
E. 18
A. 6
B. 10
C. 12
D. 16
E. 18
Check other Worst Case Scenario Questions from our Special Questions Directory to understand the concept better.
the worst scenario 
