Two little bears put 8 kilograms of oil in a big oil bottle. Now it will be divided into two 4 kg oil bottles, but there is no scale or anything like that, only a medium oil bottle that can hold 5 kg oil and a small oil bottle that can hold 1 kg oil. Can you help bear divide the oil with these three oil bottles?

Difficulty:

A deer jumped forward five squares from the starting point, and then jumped back four squares; Then he jumped forward 6 squares, jumped backward 10 squares, and finally stopped. At this time, the deer stopped at the starting point. Front or back? How many squares are there from the starting point?

Answer:

Difficulty:

Interesting topic

Two little bears put 8 kilograms of oil in a big oil bottle. Now it will be divided into two 4 kg oil bottles, but there is no scale or anything like that, only a medium oil bottle that can hold 5 kg oil and a small oil bottle that can hold 1 kg oil. Can you help bear divide the oil with these three oil bottles?

answer

Fill the 5kg bottle first, then fill the 1kg oil bottle from the 5kg bottle, and pour the oil in the 1kg oil bottle back into the 8kg oil bottle.

Difficulty:

A deer jumped forward five squares from the starting point, and then jumped back four squares; Then he jumped forward 6 squares, jumped backward 10 squares, and finally stopped. Does the deer stop before or after the starting point? How many squares are there from the starting point?

answer

Step one, in the fifth box ahead.

Step two, jump back four squares, 5-4= 1, the first square in front.

Step 3, jump forward 6 squares, 1+6=7, the seventh square ahead.

Step 4, jump back to 10 squares, 10-7=3, the third square behind.