Interesting math
1, how to divide the property?
There was an old Arab man who had 1 1 a horse. Make a will before death: the eldest son, the second son and the youngest son inherit half, one quarter and one sixth of the inheritance respectively. Sons can't even think about it. What they got was not an integer. You can't cut a horse into pieces, can you?
Answer: The clever neighbor brought a horse of his own and said to them, Look, there are 65,438+02 horses now. Half of the boss's 12 horses are six, the second is three and the third is two. I will take the remaining one home as usual.
2. Who is lying?
Xiaoming goes fishing, but he doesn't know the way to the fish pond. On the way, he met three people, Zhang San, Li Si and Wang Wu, so he asked them for directions. Who knows that three people have their own opinions? They told Xiao Ming not to believe what others said. Zhang San said: Li Si is lying.
Li Si said: Wang Wu is lying.
Wang Wu said: Both Zhang San and Li Si are lying!
One of the three people is telling the truth. Who is telling the truth and who is lying?
Answer: Zhang San lied, Wang Wu lied and Li Si told the truth.
Guess a math noun:
1, 5432 1 (countdown)
2, as many as each (average)
3. Manual calculation (index)
Play an idiom
1, the reciprocal of 3 (upside down) 4
322, any power of 1 (consistent) 100 (constantly changing) 3, 10 and
4、 1000? 100×100×100 (of course)
5,5,2,4,6,8, 10 (coincidence)
Interesting math problem:
Where is the one yuan?
Three people stay in a hotel, and the price per person per day is 10 yuan. Everyone paid ten dollars, and the boss gave them thirty dollars altogether. Later, the boss gave them a discount of five yuan and asked the waiter to return it to them. As a result, the waiter paid two yuan, and the remaining three yuan was refunded by one yuan each. That is to say, everyone spent 9 yuan's money, three people spent 27 yuan altogether, and the waiter's two yuan was ***29 yuan. Where did the dollar go?
Math tips:
People call 12345679 "missing eight digits". This "missing eight numbers" has many surprising characteristics, such as multiplying by multiples of 9, and the product is actually composed of the same number. People call this "uniform". For example:
12345679×9= 1 1 1 1 1 1 1 1 1 12345679× 18=222222222
12345679×27=333333333 12345679×8 1=999999999
These are all 0 times to 9 times of 65438+9.
There are 99, 108, 1 17 to17, and the answer is:
12345679×99= 122222222 1 12345679× 108= 1333333332
12345679× 1 17= 1444444443 12345679× 17 1=2 1 1 1 1 1 1 109
This is also called uniform. 2