2. 职称英语
  3. Compare Quantity A and Quantity B, using additional information centered above t

Compare Quantity A and Quantity B, using additional information centered above t

游客2024-01-12  68
问题 Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:
(A)Quantity A is greater.
(B)Quantity B is greater.
(C)The two quantities are equal.
(D)The relationship cannot be determined from the information given.
A symbol that appears more than once in a question has the same meaning throughout the question. [br] S = {1,2, 3, 4, 5,6, 7, 8}
选项
答案 A
解析 Recall that the number of r-member subsets of a set with n members is equal to . So Quantity A is equal to= 70. Similarly, Quantity B is equal to= 56. Thus the correct answer is Choice A.
This explanation uses the following strategy.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
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