2. 外语
  3. Which two of the following numbers have a product that is between -1 and 0 ? Indicate both of the numbers.

Which two of the following numbers have a product that is between -1 and 0 ? Indicate both of the numbers.

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问题 Which two of the following numbers have a product that is between -1 and 0 ? Indicate both of the numbers.
选项 A、-20
B、-10
C、2-4
D、3-2
答案B，C
解析 For this question, you must select a pair of answer choices. The product of the pair must be negative, so the possible products are(-20)(2-4),(-20)(3-2),(-10)(2-4), and(—10)(3-2). The product must also be greater than -1. The first product is < -1, the second product is< -1, and the third product is > -1, so you can stop there.
The correct answer consists of Choices B(-10)and C(2-4).
This explanation uses the following strategies.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
Strategy 10: Trial and Error
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