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Dahasolnce [82]
3 years ago
8

A bag contains 6 brown, 8 white, and 4 black marbles. Each time you take a marble

Mathematics
2 answers:
marusya05 [52]3 years ago
3 0

Answer:

4.44

Step-by-step explanation:

Total NM of ball=18,

black ball=4

p(black,black)=?

p(black,black)=p(b)+p(b)

4/18+4/18=4.44ans

jonny [76]3 years ago
3 0

Answer:

  • 2/51

Step-by-step explanation:

<u>Total number of marbles:</u>

  • 6 + 8 + 4 = 18

<u>Probability of black marble:</u>

  • p = 4/18 = 2/9

<u>Without replacement, we have 3 black out of 17 total, then probability of the second black is:</u>

  • p = 3/17

<u>Required probability is:</u>

  • p(black, black) = 2/9*3/17 = 2/51
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