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51.

If an event has more than one sample point then it is called _____________(a) simple event(b) compound event(c) impossible event(d) sure eventI had been asked this question by my college director while I was bunking the class.The doubt is from Probability topic in section Probability of Mathematics – Class 11

Answer»

The correct ANSWER is (b) compound event

To explain I would say: If an event has more than ONE sample point then it is CALLED compound event.

e.g. at least one head appears on TOSSING n coins.
Discussion
52.

If two dice are simultaneously rolled then what is probability of getting sum 4?(a) 1/6(b) 1/4(c) 1/12(d) 1/9I had been asked this question in an interview for job.I want to ask this question from Probability topic in section Probability of Mathematics – Class 11

Answer»

The correct CHOICE is (c) 1/12

For explanation I would SAY: If two dice are simultaneously rolled then total NUMBER of POSSIBLE outcomes is 6*6 =36.

We can GET 4 as sum in these cases {(1,3), (2,2), (3,1)}. So, probability of getting sum 4 is 3/36 = 1/12.
Discussion
53.

If four dice are rolled simultaneously then what is the total number of possible outcomes?(a) 6(b) 36(c) 216(d) 1296The question was posed to me in an online quiz.My query is from Probability topic in division Probability of Mathematics – Class 11

Answer» CORRECT option is (d) 1296

To explain I would say: If FOUR dice are ROLLED simultaneously then total number of POSSIBLE outcomes is 6^4=1296.
Discussion