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13. Probability
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Q5 of 128 Page 13

A die is thrown once. What is the probability of getting a number lying between 2 and 6?

Total numbers of elementary events are: 6 being a dice having six faces

Let E be the event of getting a prime number


The favorable outcomes are: 3, 4, 5,


Total number of favorable outcomes are = 3


P (number between 2 and 6) = P (E) = 3/6 =1/2


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3

A bag contains 5 red, 8 green and 7 white balls. One ball is drawn at random from the bag. What is the probability of getting a white ball or a green ball?

4

A die is thrown once. What is the probability of getting a prime number?

6

A die is thrown once. What is the probability of getting an odd number?

7

If E denote the complement or negation of an even E, what is the value of ?

Questions · 128
13. Probability
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