Correct Answer - Option 3 : Friday
The logic followed here is:
Given: 11th day of the month is Saturday and the total number of days is 31.
Previously Saturday would have been failing on the date:
11th – 7 = 4th
The day before Saturday is
1. Friday
2. Thursday
3. Wednesday
Friday is 3rd day of the month.
This means next Friday will fail on the dates:
3rd + 7 = 10th
Next
10th + 7 = 17th.
Next
17th + 7 = 24th
Next
24th + 7 = 31th
Thus we can see there are 5 Friday (3, 10, 17, 24, 31).
Hence, the correct answer is “Friday”.