mxrvin4977
18.09.2019 •
Mathematics
Abag contains 8 b l a c k marbles, 5 w h i t e marbles, and 3 y e l l o w marbles. if a marble is drawn from the bag, replaced, and another marble is drawn, what is the probability of drawing first a b l a c k marble and then a y e l l o w marble? b. a bag contains 5 r e d marbles, 3 y e l l o w marbles, and 8 w h i t e marbles. if two different marbles are drawn from the bag , what is the probability of drawing first a r e d marble and then a w h i t e marble?
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Ответ:
(a).
(b).
Step-by-step explanation:(a).
The number of Black marbles in the bag = 8
Number of White marbles in the bag = 5
Number of Yellow marbles in the bag = 3
Total marbles in the bag = 16
The probability is given by,
So,
Probability of drawing a Black Marble first is,
Now replacement is done.
So,
Probability of drawing Yellow Marble second is,
So,
Probability is given by,
Therefore, the probability is,
(b).
Number of Red marbles = 5
Number of Yellow marbles = 3
Number of White marbles = 8
Total marbles = 46
Probability of drawing a Red marble first is given by,
And,
Probability of drawing a White marble second is given by,
As, there is no replacement.
So,
Probability is given by,
Therefore, the Probability is given by,
Ответ:
why the 4 and 3 there
Step-by-step explanation: