JEE MATHEMATICS MCQ: SET THEORY

1 Easy

1 of 1

Application +4 | -1

In a town of 10000 families, it was found that

40 \%

families buy newspaper

A, 20 \%

families buy newspaper B and

10 \%

families buy newspaper

C

, 5% families buy newspapers

A

and B, 3% buy newspapers B and

C

and

4 \%

buy newspapers

A

and

C

. If

2 \%

families buy all the three newspapers, then number of families which buy

A

only is

View answer and explanation

Correct option: B

3300

Option B is correct because by using the principle of inclusion-exclusion, the number of families buying newspaper A only is calculated to be 3300.

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2 a_1 a_2 a_3 \ldots . . a_{2006}

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S

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