Question

Thirty days are in September, April, June and November. Some months are of thirty one days. A month is chosen at random. Then its probability of having exactly three days less than a maximum of $31$ day is

• A. $\frac{15}{16}$
• B. $1$
• C. $\frac{3}{48}$
• D. None of these

Answer 1

The correct option is D

None of these

Explanation for the correct option:

Finding the probability of having exactly three days less than a maximum of $\mathbf{31}$ day:

According to the question, September, April, June, and November are the only months with thirty days. Thirty-one days make up some months.

February is the month with three days less than $31$ days and $28$ days.

The probability is P(Selecting February)=$\frac{1}{12}$

Hence, the correct option is D.