A sum of money is rounded off to the nearest rupee. The probability that the round off error is at least ten paise is
Explanation for the correct option:
Step 1: According to the question.
The sample space is the total outcomes for this situation are all possible errors in rounding off to the nearest rupee are
When we add all these samples, we get
Let E be the event that the round off error is at least paisa
Let E' be the event for the round off error not more than paisa is
When we add all these events, we get the favorable outcomes as
Step 2: Finding the probability
Probability that the round off error is not more than paisa is
Thus the probability that the round off error is at least paisa is
Hence, option (C) is the correct answer.