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JAMB Mathematics 2015 Paper

Question : 26

Total: 61

Find A∩B

Solution:

Concept:

The intersection of two sets,

A \cap B

, contains only the elements that appear in both sets.

Explanation:

Write each set without repeating elements:

A = \{3, 4, 1, 10, \frac{1}{3}\}

and

B = \{4, 3, \frac{1}{3}, 7\}

Compare the elements of

A

with the elements of

B

The common elements are

3

4

, and

\frac{1}{3}

Therefore,

A \cap B = \{3, 4, \frac{1}{3}\}

Answer:

A \cap B = \{3, 4, \frac{1}{3}\}

This corresponds to option C.

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