A man has a job, which requires him to work 8 straight days and rest on the ninth day. If he started work on Monday, find the day of the week on which he gets his 12th rest day.
Thursday
Wednesday
Tuesday
Friday
Explanation:
He works for 8 days and takes rest on the 9th day. So On the 12th rest day, there are 9 x 12 = 108 days passed.
Number of odd days = (108 - 1) / 7 = 107 / 7 = 2. So the 12th rest day is wednesday.