Referring to interesting subjects in high school, it is impossible not to mention Math with many logical calculations, interesting puzzles, although difficult, but when solved, everyone is amazed. The application from this subject is also a lot of fun, sometimes creating a counting game, sometimes solving difficult geometry.
For today’s math exercises, in order for students to feel less pressured and boring, teachers always create various forms together to stimulate the creativity of students. A problem that has attracted many people recently is an elementary school problem with familiar circles.
The problem is as follows: For 10 balls stacked on top of each other in the order 1-2-3-4 (left image). Quiz you only move 3 balls to create an upside-down figure in the order of 4-3-2-1 (right image).
Being an elementary math problem is certainly easy for a lot of people. However, if you follow normal operations, you need to move up to 6 balls to satisfy the requirements of the problem. But only move three balls to turn upside down, can you solve it in 5 minutes.
In fact, the answer to this problem is very simple, you just need to pay a little attention to be able to do it right away. To create the upside-down image on the right, first do the following:
“Call the rows of balls from top to bottom in the left figure 1,2,3,4 respectively.
Move the two balls in row 4 to row 2. Then move the ball in row 1 to the bottom.
Thus, we have the ball order as shown on the right, satisfying the requirements of the problem.
Once we have found a solution, we see that this problem is not too difficult. Just need to think sharp, tacitly arranged in the head can easily find a solution.
How long did it take you to solve this problem?