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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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第一问 宗老板说：正过来是5/30 (中间交叉的）
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