MathematicsSetsJAMB
In a group of 50 students, 30 like rice, 25 like beans and 10 like both. How many like neither?
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Answer: A. 5
n(R ∪ B) = 30 + 25 − 10 = 45, so 50 − 45 = 5 like neither.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.