Neco 2025 Mathematics Question 31

Practice objective / multiple choice question 31 from the 2025 Neco Mathematics examination.

Neco 2025 Mathematics Objective / Multiple Choice Medium Difficulty

Question 31 NECO • 2025 • MATHEMATICS • objective

In a universe of 40 elements, two sets A and B satisfy \( |A\\cup B| = 30 \), the number of elements that belong to exactly one of the sets is twice the number that belong to both sets, and \( |A| = 2|B| - 5 \). Find \( |A| \) and \( |B| \).

Correct Answer A. |A| = 25, |B| = 15

B. |A| = 20, |B| = 10

C. |A| = 30, |B| = 20

D. |A| = 22, |B| = 12

Correct Answer

Correct Option:

|A| = 25, |B| = 15

This is Neco 2025 Mathematics Question 31. It is one of the objective questions from the 2025 Neco Mathematics examination.

Difficulty level: Medium .

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