Problem 7BSC

Digits of Pi “Which of the following is the mean of the first 100 digits of pi after the decimal point: 4.4, 4.5, 4.6, 4.7, or 4.8?” If you make a random guess for the answer to that question, what is the probability that your answer is the correct answer of 4.8?

Solution 7BSC

There are five choices out of which selecting one at random. The choices are equally likely. So, there are five events in the sample space one for every number.

Let A be the event that the correct answer of 4.8 which can be occur only in one way.

Therefore by the classical approach of probability, the probability that the answer is the correct answer of 4.8 is,

Hence, the probability that the answer is the correct answer of 4.8 is.