Today, there is a rooster, which is worth five: chicken mother, worth three: chick, worth one. Buy a hundred chickens today. Ask the chicken Weng, the chicken mother. What is the geometry of a chicken?

Topic 2: Han Xin ordered soldiers.

Han Xin trains one for every three people, one more, five more and two more. There are seven people in a row, four more, thirteen people in a row and six more. How many soldiers?

Topic 3: Li Bai buys wine

Li Bai is walking in the street. Carry a pot to buy wine, double it when you meet a shop, drink a bucket when you see flowers, and drink all the wine in the pot three times when you meet shops and flowers. How much wine is there in the pot?

Topic 4: Two mice pass through the wall.

Today, the wall is five feet thick and was worn by two mice. The mouse has one foot every day, and the mouse has one foot. There are twice as many mice as the day before, and half as many mice as the day before. When will they meet? Wear geometry?

Topic 5: the problem of hundred sheep

A drives a flock of sheep to chase the grass, B drags a fat sheep, and then asks A and 100 carefully. There is a cloud: if such a group is obtained, add a small semi-group of a semigroup. You have to do it alone. (meaning, add so much. Then add a semigroup, add a quarter group, and add yours, that's enough. A How many sheep are there?