March of a certain year happens to have four Mondays and four Fridays. What day is March 1 of that year?

March of a certain year happens to have four Mondays and four Fridays. What day is March 1 of that year?

Saturday.

There are four Mondays and four Fridays in July of a certain year. What day is July 1 of that year?

There are 31 days in July. If there are four complete weeks, that is, there are four complete Mondays to Sundays, that is 28 days. Then there are three days left. Whether at the beginning or the end of the month, there will be Mondays or Fridays
31-3 * 7 = 10. There is no Friday at the end of the month, so it is from Monday to Thursday at most. There is no Monday at the beginning of the month, so it can only be from Tuesday to Sunday. Count the four days at the end of the month, and the six days at the beginning of the month add up to exactly 10 days, So July 1 can only be Tuesday ~ the answer comes out ~ it's not difficult to think more with hypothetical method, come on!

There are four Mondays and four Fridays in July of a certain year. What day is the first day of July of that year

Tuesday

There are four Mondays and five Fridays in January of a certain year. What day is January 1 of that year
Don't just tell the answer,

Friday
January 31 days, followed by 4 weeks (28 days), 31 - 28 = 3, obviously this month starts on Friday, Saturday and Sunday

In January of a year, there are four Mondays and four Fridays. What day is the first day of January of the year
Suppose: there are () Mondays and () Fridays in January
January 1 is a Tuesday, and January has () Mondays and () Fridays
January 1 is a Wednesday, and January has () Mondays and () Fridays
January 1 is a Thursday, and January has () Mondays and () Fridays
January 1 is Friday, January has () Mondays and () Fridays
January 1 is a Saturday, and January has () Mondays and () Fridays
January 1 is Sunday, and January has () Mondays and () Fridays
Therefore, January 1 of this year is a week ()
Look at my typing. Please, just answer a question
Don't just give me the day of the week, just write a few parentheses..

Let's draw a picture to understand. Suppose there are seven days in a week on Monday, January 1st, and ask how many weeks there are on January 1st and Friday. 31 / 7 ≈ 4.428571429 & nbsp; take modulus = 4, that is, four complete weeks and then look at the remainder (31 / 7) - 4 & nbsp; * & nbsp; 7 & nbsp

There are 31 days in July. If there are five Saturdays and Sundays in July, what day is the first day of May?

It's Sunday. See the calendar of 2011 for details!

June 1st, 2003 is Sunday. What day is June 1st, 2004?
Use the formula of calculation

From June 1st, 2003 to June 1st, 2004, there are 366 days
366÷7＝52…… two
Sunday + 2 days = Tuesday
June 1, 2003 is Sunday and June 1, 2004 is Tuesday

This year's June 1st is Friday, and next year's June 1st is Sunday______ ．

2013÷4=503… 1, there is a remainder, 2013 is a normal year, its February has 28 days; so: from June 1, 2012 to June 1, 2013, a total of 365 days; 365 △ 7 = 52 (weeks) 1 (day); the remainder is 1, and the next day after Friday is Saturday, that is, June 1, 2013 is Saturday

There are five Saturdays and four Sundays in October of a certain year. October 1 of this year is ()
A. Monday B. Tuesday C. Wednesday D. Thursday

October has 31 days, and 31 = 4 × 7 + 3, so this month has 4 weeks and 3 days. We can use the hypothetical method to calculate the first Saturday of this month: (1) if October 1 is a Saturday, then October 2, 9, 16, 23 and 30 are all Sundays, and there are 5 Sundays, which is not consistent with the meaning of the title; using the same method, we can calculate that October 2 is not a Saturday (2) If October 3 is a Saturday, then October 4, 11, 18 and 25 are Sundays, which are exactly four Sundays. If you push back, you can know that October 1 is a Thursday

If today is Monday, what day will it be in another 100 days?

100 △ 7 = 14, the remainder is two, Monday plus two is three, so another 100 days is Wednesday