Look for the mathematical laws that exist in life.

There are many mathematical laws in life, and the mathematical laws in life are the summary and accumulation of life knowledge in mathematics.

A year in a non-leap year = 365 days, 365 ÷ 7 = 52 weeks 1 day, so there are 52 weeks in a year, so the number of weeks in a non-leap year = the number of weeks in the previous year+1 (equal to 7, Sunday and Monday), and the number of weeks in a leap year = the previous year.

Pythagorean theorem, hook 3 strands, 4 strings and 5 (3&; # 178; +4 & amp； # 178; = 5 & amp# 178; )

The straight line between two points is the shortest.

The probability of winning the lottery is very small.

When making windows, workers will set a board at the opposite corner of the quadrangle, and the triangle is for stability.

99 multiplication table

Observing the calendar, we can find that the dates arranged horizontally are 1 larger than the previous date, and the dates arranged vertically are 7% larger than the previous date.

Pigeon cage principle, there are ten apples on the table. If we put these ten apples in nine drawers, no matter how we put them, we will find at least two apples in one drawer. This phenomenon is what we call the "pigeon hole principle". The pigeon hole principle roughly means: "If each drawer represents a collection, then each apple can represent an element. If there are n+ 1 elements in n sets, there must be at least two elements in a set. " The pigeon coop principle is sometimes called the pigeon coop principle. This is an important principle in combinatorial mathematics.

The arrangement law of interval phenomenon. Tree planting phenomenon: (1) both ends are planted, interval number+1= plant number (2) both ends are not planted, interval number-1= plant number (3) If one end is planted and the other end is not planted, interval number = plant number. In the end-to-end closed arrangement, the number of objects is equal to the number of intervals.

Periodic law, 60 seconds = 1 minute, 60 minutes = 1 hour, 24 hours = 1 day, 7 days = 1 week, 12 months = 1 year.

Arithmetic progression law, geometric progression law.

The sum of two sides of a triangle is greater than the third side, and the difference between the two sides is smaller than the third side.

The sum of inner angles of a convex polygon = (number of sides -2) x 180, and the sum of outer angles = 360.

In a word, the mathematical laws applied in life all involve the field of elementary mathematics. Such as arithmetic, geometry, algebra, probability, etc. Sometimes it involves game theory, linear algebra and so on. The origin and life of mathematical laws in life, pay attention to summing up the mathematical phenomena in life, and mathematical laws will be produced. Therefore, in life, we should be a conscientious person to sum up and discover the mathematical laws in life, and many mathematical laws in life are waiting for us to discover.