First of all, topic 1: Monkeys pick peaches.
There are a bunch of peaches, and five monkeys will share them. The first monkey divided the peach into five parts and one part. The monkey threw away the extra one and took one. The second monkey divided the remaining peaches into five parts and one part. The monkey also threw away the extra one and took one. The third, fourth and fifth monkeys all did this. How many peaches were there at least at first?
Topic 2: Three people crossing the bridge
Three people want to cross the bridge. One of them can't see in the dark. He must take a flashlight to cross the bridge. These three people only have one flashlight, and the bridge can only accommodate two people at the same time. Everyone has a different time to cross the bridge, which is 1 minute, 2 minutes and 5 minutes respectively. When two people cross the bridge together, they must cross the bridge at a slower speed. How long will it take these three people to cross the bridge at least?
Third, topic three: guessing numbers
There are four numbers, and each number is different. The first digit is 1 or 2, and the last digit is 3 or 4. If the first digit is 1, then the second digit is 3; If the first number is 2, then the second number is 4. What is this four-digit number?
Four. Theme 4: Bottles and Drinking Water
There are two bottles, which can hold 3 liters and 5 liters of water respectively. Now, you need to use these two bottles to get 4 liters of water. Excuse me, what do you need to do
Verb (abbreviation of verb) Topic 5: Three light bulbs
There are three switches, corresponding to three bulbs respectively. Now, you need to know which switch controls which light bulb, but you can only enter the room once. What should you do?
Topic 6: cats, mice and cheese
There is a cat, a mouse and a piece of cheese. They are in a closed room. Now, you need to let mice eat cheese, but cats can't eat mice. What should you do?
Seven. Topic 7: Mathematical formula
What is the result of the following mathematical formula?
8÷2(2+2)
Eight. Topic 8: Filing principles
There are 10 pairs of socks, five pairs of black and five pairs of white. Now, you need to draw at least 6 pairs of socks from this 10 pair to ensure that at least two of them are of the same color. Excuse me, why?
Topic 9: Fill in the blanks in the matrix
Please fill in the blanks in the matrix below so that the sum of the numbers in each row, column and diagonal is equal.
123
4_6
789
X. topic 10: guessing the ball
There are 12 balls, one of which is different and lighter than others. Now, you have a balance that can be weighed at most three times. What do you think of this ball?
The above is the 10 IQ test. By challenging these questions, you can test your logical thinking and reasoning ability. I hope everyone will think hard and find the right answer.