To find the probability that the selected day starts with the letter 'W' or 'S', we first need to identify the days of the week and check which of them meet the criteria.
There are a total of 7 days in a week:
- Monday
- Tuesday
- Wednesday
- Thursday
- Friday
- Saturday
- Sunday
Now, we list out the days starting with 'W' or 'S':
- Wednesday (Starts with 'W')
- Saturday (Starts with 'S')
- Sunday (Starts with 'S')
There are 3 days that start with 'W' or 'S'. Thus, the number of favorable outcomes is 3.
The total number of possible outcomes (days in a week) is 7.
The probability is given by the ratio of the number of favorable outcomes to the total number of possible outcomes:
\(\text{Probability} = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} = \frac{3}{7}\)
Therefore, the probability that the selected day starts with the letter 'W' or 'S' is \(\frac{3}{7}\).
This matches with the correct answer option, which is 3/7.
Important Questions from Probability
Two dice are thrown simultaneously. What is the probability of getting the same number on both the dice?
The probability of being 53 Sundays in year 2020 is-
Three dice are thrown randomly. The probability of coming 3 in at least one die is
The probability of having 53 Tuesdays in an ordinary year is:
When two dice are tossed simultaneously, the probability that the sum of the numbers appearing on both the dice is 8 will be
