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题库 / GMATLA-GI-3
Refer to the pictograph of a survey of students at Central Community College. Each symbol represents 10 students in a sample of 300.
Use the drop-down menus to complete each statement according to the information presented in the diagram.
If one student is selected at random from the 300 surveyed, the chance that the student will be under 30 o ra high school graduate or both is.
If one student is selected at random from the 300 surveyed, the chance that the student will be both under 30 and a high school graduate is.
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题目贝恩图下方的解释看清楚：是no high school diploma 和30 years and older
第一问 宗老板说：正过来是5/30 (中间交叉的）
题目的30 o ra high school应该是30 or a high school, 当时看了半天没明白