This year is a leap year, ***366 days, (366+ 1)/7=52 weeks and 3 days. Today is Tuesday, so today is Friday next year.

For example:

1, August 4th, 2004 is Wednesday, and in 100 days: 100/7 = 14...2, so it takes Wednesday and two days, and the result is Friday.

2. September 2004 1 is Wednesday, June 65438+February 8 this year: this involves the month. There are 30 days in September, 3 1 day in June and 30 days in June.

definition

Addition: the operation of combining two numbers into one number.

Subtraction: when two addends and one of them are known, the operation of finding the other addend.

Multiplication: the operation of finding the product of two numbers.

Division: the operation of finding another factor by knowing the product of two factors and one of them.