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lana [24]
3 years ago
10

A bag contains 10 balls of which 6 are red and the rest white and blue of equal numbers. If a ball is picked at random, find the

probability that it is either white or red.
Mathematics
2 answers:
makvit [3.9K]3 years ago
8 0

Answer:

\frac{4}{5}

Step-by-step explanation:

Let w = number of white balls, b = number of blue balls

6 + w + b = 10

w + b = 4

\because w = b

\therefore w + b =

w  = 2

P(r∪w) = P(r) + P(w) - P(r∩w)

= \frac{6}{10} + \frac{2}{10} - \frac{0}{10}

= \frac{8}{10}

= \frac{4}{5}

\therefore The probability of picking either a red or white ball is \frac{4}{5}  

Hope this helps :)

creativ13 [48]3 years ago
3 0

Answer:

Since each ball has an equal chance of being drawn: 16 p = 1, or ... You can either apply the first equation to find that. B = 1 - R = 3/8 ... A box contains 5 white, 6 red, and 4 black balls of identical size. If 3 balls are ... What is the probability of getting 2 red balls if we pick 3 balls from the bag randomly

Step-by-step explanation:

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