Mathematics for IGCSE & O level - Sets (Section 1 - No. 41) | ExamPlay

Mathematics for IGCSE & O level - Sets (Section 1 - No. 41)

In a survey of 50 students, 20 like Math, 25 like Science, and 10 like both. How many students like only Math?

10

15

20

30

解释

20 - 10 = 10

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