# Probability test--II

The probability of solving a question by three students is  respectively. Probability of question is being solved is ____.
Two friends A and B have equal number of daughters. There are three cinema tickets which are to be distributed among the daughters of A and B. The probability that all the tickets go to daughters of A is 1/20. The number of daughters each of them have is ____.
4
5
6
3
The probability that at least one of the events A and B occurs is 3/5. If A and B occur simultaneously with probability 1/5, then  is ____.
Let A and B be two events such that  and  where  stands for complement of event A. Then events A and B are ____.
Independent but not equally likely
Mutually exclusive and independent
Equally likely and mutually exclusive
Equally likely but not independent
Let S be a set containing n elements and we select 2 subsets A and B of S at random then the probability that  and  is ____.
1/n
A bag contains 8 black and 7 white balls. Two balls are drawn at random. Then for which the probability is more ____.
Both balls are white
One ball is white and one is black
Both balls are black
All of the above are equals
Two numbers are selected randomly from the set  without replacement one by one. The probability that minimum of the two numbers is less than 4 is ____.
5 boys and 5 girls are sitting in a row randomly. The probability that boys and girls sit alternatively is ____.
5/126
1/126
4/126
6/125
Two fair dice are tossed. Let A be the event that the first die shows an even number and B be the event that the second die shows an odd number. The two event A and B are ____.
Mutually exclusive
Independent and mutually exclusive
Dependent
None of the above
If  where c stands for complement, then the events  and  are ____.
Mutually exclusive
Independent
Equally likely
None of the above
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Probabilty is an important chapter, hence another test

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Kajal Sengupta
Physics 9th to 12 th grade,CIE, Edexcel, AP, IB , CBSE, ICSE
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