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Comments (3)
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Topic:Mathematics skills 12
5/5 (2)
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sb
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Nov 2020
sbsays...
Makes sense.
With probability here think of the worst case scenario, not best.
To start let's say you draw 5, worst case all of them happen to be Green.
You draw additional 4 and they happen to be all blue.
Still haven't drawn any red. But guaranteed the next one will be a Red. Leaving one more Red, but now you've drawn all colors.
Answer, 10. The maximum number you'd have to draw to guarantee all colors are chosen.
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Comments (3)
Makes sense.
With probability here think of the worst case scenario, not best.
To start let's say you draw 5, worst case all of them happen to be Green.
You draw additional 4 and they happen to be all blue.
Still haven't drawn any red. But guaranteed the next one will be a Red. Leaving one more Red, but now you've drawn all colors.
Answer, 10. The maximum number you'd have to draw to guarantee all colors are chosen.
Good questions!
Must be 10. Worst case scenario the 2 red marbles are the last ones left.