Stabbed twice in the back to death. There is a bloody sharp knife next to the body.
However, on the ground washed by rain last night, only the footprints of high heels left by the victim when he came to the scene were left, and there were no footprints.
"It is strange that there are no footprints of the murderer? He must have killed someone and escaped before or when it rained. " The police said.
"No, in that case, the victim's high heels should also be washed away. There is blood next to the body, and the blood on the sharp knife of the murder weapon has not been washed off, indicating that the victim was killed here after the rain stopped. " The detective concluded.
"So, how could the murderer leave such a wide croquet field without leaving footprints? Did you destroy your footprints with your hands or a broom and run away? " "If you do that, you will still leave traces of destruction. Although the ground was washed by rain, it was clean and there was nothing. High-heeled shoes are very small, so it is impossible for the killer to step on them and escape.
To this end, the group of detectives deliberately took off the high-heeled shoes of the deceased and compared them with the shoe prints left on the ground. High heels are consistent with shoes. It must be the footprints of the victim walking. "So, is the murderer a ghost without legs?" "I said the police department, please don't make such weird reasoning." "But I can't think of any other possibility. Did the killer fly down from the air with wings to kill the victim? Impossible. " The edo police department is at a loss.
Even the famous group of detectives are quite nerve-racking. He looked around and accidentally found an iron cabinet for storing things and a faucet for washing hands at the door of the wire fence. "So, the police department, find out. The murderer destroyed his footprints in a very simple way. "
The mystery of footprints was finally solved.
So, what is the means?
answer
Destroyed the footprints with a shower.
Connect the hose of the shower to the faucet, and the murderer left the scene while washing his footprints.
In this way, the water sprayed from the shower will have the same effect as rain, and the footprints can be washed clean. On the ground with good water permeability, the sprinkler will not leave traces when spraying water. Then the murderer withdrew from the outside of the barbed wire and pulled out the water pipe to leave.
Simple reasoning
Hong Hong, Cong Cong and Ying Ying all wore sun hats to have a picnic. One hat they are wearing is red, the other is yellow, and the other is blue. All I know is that Hong Hong is not wearing a yellow hat. Cong Cong didn't wear a yellow or blue hat. Please judge what colors hats Hong Hong, Cong Cong and Ying Ying wear.
Answer:
In this formula, the number of * * is 10. Pairing two numbers with the sum of 1 1 can form five pairs.
To find the sum of this 10 number, you can first match it into five pairs (the sum of each pair is 1 1), and then find the sum of five 1 1. The calculation method is:
1+2+3+4+5+6+7+8+9+ 10
This method can be used to find the sum of all arithmetic progression.
2. Simple reasoning
Zhao, Qian, Sun, Li and Friday held a round table meeting. After the meeting, the participants said: "At the meeting, Zhao sat next to Qian, and on the left of Qian was either Sun or Li." Li recalled: "Qian sat on Sun's left and I sat next to Sun." The results are all wrong, so how to sit?
Answer: Yes.