la 9. Choose the correct modal word for the following sentences. ride a bike. (a) This is my sister Indu. She (i) may (ii) must Stade an until land (iii) can
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1
Explanation:
The total number of ways of getting 3 marbles is 20C3 = 1140.
The total number of ways of getting 3 blacks is 8C3 = 56
The total number of ways of getting a trio of marbles, which must have a red is 1140 - 56 = 1140 - 40 - 16 = 1100 - 16 = 1084.
Hence, prob of getting at least one red is 1084/1140 = 95% (approx)
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Explanation:
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