Analysis:

There are seven days in a week, which is a fixed number. Today is Wednesday. Find a day in 50 days with 50÷7, and then add the remainder with 3. If it is less than 7, it is a day of the week. If it is greater than 7, you need to subtract 7 to get the day of the week.

Solution: 50÷7=7 (weeks) … 1 (days)

3+ 1=4 days

It will be Thursday in 50 days.

Extended data

The problem is to infer the day of the week in a few days, months or years. Answering such questions is mainly based on the rule of seven-day cycle every week, and periodic answers are adopted.

When calculating the number of days, we should follow the rule that "every four years is a leap, the whole hundred is not a leap, and only every four hundred years is a leap", that is, the Gregorian calendar year is not an integer hundred hours, as long as it is a multiple of 4, it must be a multiple of 400.