Aianyxx Aianyxx

22-03-2019
Mathematics

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A bag contains 8 black beads and 4 white beads. If 2 beads are drawn at random, what is the probability that both beads are black?

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MooCow123 MooCow123

22-03-2019

Answer:

14/33

Step-by-step explanation:

The total amount of beads is 8+4 = 12. 8 of these are black beads, so that is what we want, so 8/12 or 2/3. For the second one, one black bead is already taken so 8-1 = 7 are left and for the total 12 - 1 = 11 are left, so 7/11. Multiply this by 2/3 and we get 14/33.

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