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Vesna [10]
3 years ago
15

Brainlist Please help me

Mathematics
1 answer:
creativ13 [48]3 years ago
3 0

Answer:

Yes she made an error. Explanation is below.

Step-by-step explanation:

Let the sample space for a six sided number cube be S

n(S) = \{1,2,3,4,5,6\}\\n(S) = 6

Let the event of a number getting greater than two be B

n(B) = \{3,4,5,6\}\\n(B) = 4

To find:

the probability of complement of B that is

p(~B) = ?

Solution"

First we need to solve probability for number getting greater than two

p(B) = \frac{n(B)}{n(S)}

Now substituting the values we get

p(B) = \frac{4}{6}

p(B) = \frac{2}{3}

but we need complement of B so

p(\textrm{complement of B)} = 1 - p(B)\\p(\~B) = 1 - p(B)\\p(\~B) = 1 - \frac{2}{3}\\ =\frac{1}{3} \\

P(complement of rolling a number greater than two) = \frac{1}{3}

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