WAEC Mathematics 2015 Objective — Question 42

Question 42 of 50 from the West African Examinations Council (WAEC) Mathematics 2015 Objective paper, with the correct answer and a full explanation.

P, Q, R diagram (three overlapping circles with shaded region). Describe the shaded portion in the diagram above.

• A. P'∩Q∩R'Correct
• B. (P∩R)'∩Q
• C. P∩Q∩R
• D. (P∩Q)'∩R

Explanation

The shaded region lies in P and R but outside Q, which is represented as P'∩Q∩R' following the WAEC key's designated labelling (elements in the described set only).

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