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It's wrong, you don't necessarily have to divide the same number, so you can't think about it from the perspective of division, you should think from the perspective of addition!
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Which subject has exam questions I think should be understood from this perspective.
I guess that's the right thing to say is a numbers teacher.
Maybe this is the stage where kids are being taught basic division.
So 20 divided by 4 equals 5.
But if you understand it in terms of language.
The word "definitely" is so absolute, and therefore wrong.
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Wrong, because the question doesn't say that the average score is given to 4 people.
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This is a difference in language, but after all, the test is a question in the second grade of primary school, so it is certainly not as complicated as we think!
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The first impression is that it is divided into 5 apples. Considering that it is the second grade of elementary school, and it is still a final exam question, although the word "certain" is too absolute, the average score is the intention of the questioner, so don't get too sharp here.
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I don't think so, and the title doesn't say that the 20 apples should be divided equally among these 4 people.
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I don't know, I'm from here, because a lot of math teachers don't learn Chinese well, and I've always had this kind of ambiguous question from elementary school to junior high school. Wondering
The best way is to guess what most of your classmates write This kind of hit rate can reach 80% Personal experience I have been tested like this when I encounter ambiguous questions in the exam.
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Children can't understand things if they're too complicated.
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Using the partition method, there are 11 empty spaces between the 12 apples, and 3 empty spaces are selected to insert the baffle, which can be divided into four groups.
Then there are c(11,3)=165 methods.
Multiply by a(4,4)=24
Finally, there are 165*24=3960 methods.
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Summary. 5 people divide 20 apples, each person has at least one, and the number of shares per person is different, how many divisions are there?
There are 4 types.
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Each person gets 6/5 of 6 apples, and each person gets 1 and 1/5 of an apple
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If you divide 20 apples evenly into 5 people, each person gets (4) apples, which is (1/5) of these apples
Everyone gets apples: 20 5 = 4.
Accounts for these apples: 1 = 1 5
Hope you find it helpful!
If there is something I don't understand, Huan Kuan rents Hongying to ask. Good luck with your studies!
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For each person has 3 apples, which is 12 apples; If each person divides 5, there are 8 apples less, and the liquid is 12, less than 8, and the difference between the two distributions is 5-3, so the children have a total of (12 + 8) (5-3) people, solution: (12 + 8) call the mountain (5-3).
10 (people) 42 (pieces) Answer: There are 42 apples in total
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Start with 10 apples.
bai is divided into four groups, and then the four groups of apples are divided into four zhi people, and it should be noted in the solution that the dao problem should.
Focus only on the number of apples.
One. 10 = 1 + 1 + 1 + 7, then one of the four people gets 7, and the other person has one, a total of a(4,1)=4 divisions.
Two. 10 = 1 + 1 + 2 + 6, then one of the four gets 2, one gets 6, and the other one gets one, a total of a(4,2)=12 methods.
Three. 10 = 1 + 1 + 3 + 5, 12 methods as above.
Four. 10=1+1+4+4, then two of the four people have one for each person, and the other two people have four for each person, with a total of c(4,2)=6 methods.
Five. 10 = 1 + 2 + 2 + 5, the same as two, there are 12 methods.
Six. 10 = 1 + 2 + 3 + 4, the number of apples shared by the four people is different, then there are a(4,4)=24 methods.
So there are 4 + 12 + 12 + 6 + 12 + 24 = 70 methods.
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In the partition method, ten apples are arranged in a row, and it is assumed that there are 3 partitions inserted in the middle, and then each partition is sandwiched by the number of apples that one person gets. Answer c(9,3).
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Ten apples were divided among four people, and each person was asked to take at least one, and the four were divided evenly.
There are 6 left, each apple has 4 choices, 4x4x4x4x4x4 = 4096 divisions.
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One for each person, there are three apples left Three apples are divided among the same person, and there are 4 divisions; Three apples for two people, A4 2, 12 kinds in total; Three apples are divided among three people, c4 3, a total of 4 species. In summary, there are 20 divisions.
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Divide the 4 apples among the 4 people, and then divide the remaining 3 apples among them
1. Look at these 3 as a group, there are 4 situations;
2. Treat these 3 as two groups, 2 and 1, and there are 12 species;
3. Treat these 3 as 3 groups, 1 in each group, and there are 4 situations;
In summary, there are 30 divisions.
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Partition method, 7 apples have 6 intervals, put 3 partitions, C6 3 equals 20 kinds.
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