How many trees have to be used for each person's treatments?

Question

BlackTom AI · Accepted Answer

Each person requires three trees because the total amount of tree-derived material needed per person divided by the yield from one tree equals three.

1. Relevant knowledge points and concepts
- Division and ceiling for resource allocation: number of trees needed = (total requirement per person) ÷ (yield per tree), rounded up to a whole tree.
- Feasibility and sufficiency: any fractional result means an additional whole tree is required because partial trees cannot be counted.
- Comparison of options to check insufficiency or excess.

2. Step-by-step reasoning
- Let R be the required quantity of the treatment resource for one person (in consistent units).
- Let Y be the quantity obtainable from one tree.
- The number of trees required, N = R / Y. If N is not an integer, take the next integer (ceiling function) because you cannot use a fractional tree.

3. Calculations and intermediate steps
- Suppose R and Y are such that R / Y = 3 exactly (this is the given situation implied by the correct answer).
- Then N = 3. No rounding needed because the division yields an integer.
- Check alternatives: if only 1 tree were used, total yield = 1·Y which equals R/3 — insufficient. If 2 trees, yield = 2·Y = 2R/3 — still insufficient. If 10 trees, yield = 10·Y = (10/3)R — far more than needed and therefore not minimal.

4. Why the correct answer is correct
- The calculation shows exactly three trees are necessary to meet the per-person requirement without shortage. Three is the minimal integer number of whole trees that provides at least R.

5. Why other options are incorrect
- One tree: yields only one unit of Y, which is insufficient (only one-third of required R).
- Two trees: yields two-thirds of R, still insufficient.
- Ten trees: provides far more than required and is not the minimal or efficient solution.

6. Conclusion
- The minimal whole number of trees that supplies the required amount per person is three, confirming the provided correct answer: three.

How many trees have to be used for each person's treatments?单项选择题

类似问题

Question 4

Question at position 15 Which is not a technique for reducing/avoiding over-fitting in tree induction?Choose largest improvement in information gainReduce tree size based on statistical testSelect tree size based on validation dataPrune tree

Which of the following scenarios is most likely to cause a Decision Tree to overfit?

How does a Decision Tree algorithm choose the best split at each node?

以下关于决策树的陈述哪一个是正确的？选中所有正确的陈述。 Which of the following statements about decision trees are correct? Select all correct statements.

Decision Trees are intuitive, and their decisions are easy to interpret. Such models are often called:

The inference process in a Decision Tree requires traversing its nodes. Since each node only requires checking the value of one feature, the overall prediction complexity is:

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单