How to calculate the points on the following four playing cards to get 24?

The operation of getting 24 points on four playing cards is as follows:

The first card is 3, the second card is 4, the third card is 5 and the fourth card is 6.

Answer:

( 1)6×8÷(4-2)

=48÷2

=24

Or 8(4-2)×6.

=8÷2×6

=24

Or 4×8-6-2.

=32-8

=24

(2) 13-(5-4)+ 12

= 13- 1+ 12

=24

This problem can be decomposed into the sum, difference, quotient and product of two numbers, and then try to adjust the given number to get 24.

Test center of this question: fill in the symbol group formula.

Test center comments: This question belongs to the common game "Blackjack", which actually examines the split of integers and the flexible use of operation symbols and brackets.

The origin and history of playing cards

Poker has been invented for a long time. At present, there are different opinions about its origin, and different countries have different versions.

People in China believe that playing cards originated from Ye Zi Opera in the Southern Song Dynasty in 12 and 13 centuries. The French believe that playing cards evolved from tarot cards, while the British say they are the first country to mention card games in all certification records.

Indians believe that in ancient India, there was a round card used for entertainment and fortune telling, which was later spread to Europe to form playing cards. The author believes that card games have appeared in the history of various countries, but it is really impossible to verify which kind of cards evolved into playing cards.

The germination of Yezi Opera can be traced back to the Han Dynasty. According to legend, General Han Xin invented Ye Zi Opera in the army for soldiers' entertainment in order to alleviate their homesickness. Because it is only the size of a leaf, it is called a leaf play. This kind of card was invented according to the calendar and has many similarities with playing cards.

52 cards are real cards, representing 52 weeks in a year. There are four seasons in a year, which are represented by four colors: spades, hearts, grass flowers and squares. Hearts and squares represent daytime, while spades and grass flowers represent night.

Another origin of playing cards comes from tarot cards, but the origin of tarot cards is also controversial. According to legend, Tarot cards originated from Kabaka, an ancient Jew. Because of the frequent contact between ancient Jews and ancient Egyptians, they also absorbed many Egyptian religious symbols. With the frequent wars in the Middle East, the predecessor of Tarot almost disappeared. Later, gypsies didn't know how to use tarot cards, but I believe they may not know much about the philosophy of tarot cards. They used it as a divination tool.