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How many minutes until new years?
It's midnight wherever you are. On East coast US for example, there are 17 mins remaining roughly.
What an event is certain to occur what us its probability?
Exactly 1.
Where else can probability be used?
"where else" implies that you already have some situations in mind. But you have chosen not to share that information. It is impossible for us to be sure that situations that we suggest in which probability may be used are not already on your list.
What is the probability that you roll a 5 and a 2?
We assume a 6 sided fair die. Now, note that the probability of rolling any number is independent of the probability of the outcome on the next role of the die. In probability terms we say the two events are independent this implies that is we look at the probability of A and the probability of B the probability of A and B is P(A)xP(B) Since we are look at the probability of a 5 and there are 6 possible outcomes, the probability of a 5 is 1/6 and a similar argument tells us the probability of a 2 is 1/6. Now, since they are independent, the probability of a 5 AND a 2 is 1/6 x 1/6=1/36 If you want to consider dice with different shapes and fewer than 6 numbers, the answer will change. I have considered only a 6 sided fair die since if one understands how this works, one can generalize to other scenarios. The commonly used die is called a cubic polyhedron. Dice come as many different polyhedra and these make for interesting probability questions.
The average number of days school is closed due to snow during the winter in a certain city in the eastern part of US is 4.what is the probability that the school in this city will close?
The probability of the school in this city being closed is the same as the probability of Iceland being covered in a cloud of ash to the extent of Airplanes being cancelled.....so yea, pretty good :D
