Math puzzles: at the same time
synchronization
In the display time of a 12-hour electronic watch, how many times can three consecutive numbers be arranged in one day?
Answer: 36 times. They are:1:1,2: 22, 3: 33, 4: 44, 5: 55, 10: 00,1:/kloc. 1 1: 13、 1 1: 14、 1 1: 15、 1 1: 16、 1 1:
Math puzzles: licensing methods
Licensing method
Four students are playing a deck of 54 cards. While dealing cards, the battery suddenly rang. Someone answered the phone and found that they didn't know who they had just sent it to. At this time, you need to count the number of cards in everyone's hand, then determine whose turn it is, and then continue to serve. Besides, there is another way to deal cards to everyone correctly. Can you think of this way?
Answer: Determine whose last card should belong, and then serve the cards backwards.
Math problem: growing mushrooms
cultivate mushrooms
The two rabbits have the same number of dead piles. They collected some mushroom spores, put them in small bags, divided them into two parts, one for each person, and then planted mushrooms. Rabbit A planted a bag of spores on each pile of dead wood, and rabbit B planted three bags of spores on each pile of dead wood. Finally, Rabbit A was full of its rotten piles, but there were still five bags of spores, and Rabbit B's spores were used up, leaving five piles of rotten piles without seeds. So, how many piles of dead wood and bags of spores do they have?
A: They each have 10 dead wood piles and 15 marsupials.
Math puzzle: socks of the same color
Math puzzles develop intelligence, add interesting math and intelligence tests, and stimulate students' interest in learning mathematics. It is a good way to train thinking logic, so let's take a look at some classic elementary school math puzzles!
Socks of the same color
In a box, there are four red socks and four white socks randomly. Now Xiaohong reached in and touched it. How many socks can she touch at least to ensure the same color?
Math puzzles: small animals
Math puzzles develop intelligence, add interesting math and intelligence tests, and stimulate students' interest in learning mathematics. It is a good way to train thinking logic, so let's take a look at some classic elementary school math puzzles!
Small animals