# XII_Maths_Probability_1 Online Test

Comprehension If n positive integers taken at random and multiplied together, then the chance that the last digit of the product would be. 1, 3, 5, 7, or 9 is

Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true

If  and  then  is equal to ____.
0.61
0.39
0.48
None of the above
If A and B are any two events, then  ____.
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
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
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
Description:

This test consist of 10 questions.Students should ideally take 10 minutes to complete the test. This test is useful for those students who are preparing for IIT JEE, AIEEE or any other engineering entrance test. This test consist of questions from Probability and which, in general, is focused in AIEEE and IIT JEE. In Probability, Bayes' Theorem and Bernoulli Trials are key topics and mostly application based questions are asked.

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