**In a school, \(220\) students offer Biology or Mathematics or both. \(125\) offe...**

### Question

In a school, \(220\) students offer Biology or Mathematics or both. \(125\) offer Biology and \(110\) mathematics. How many offer Biology but not Mathematics?

### Options

A) \(95\)

B) \(80\)

C) \(125\)

D) \(110\)

The correct answer is D.

### Explanation:

Represent the question in a venn diagram, such that:

\(n(B \cap M) = x\)

\(n(B)\) only \(= 125-x\)

\(n(M)\) only \(= 110-x\)

\(\Rightarrow 125-x + 110-x + x = 220\)

\(\Rightarrow x = 15.\)

\(n(B)\) only \(= 125 - 15 = 110\)

### More Past Questions:

## Dicussion (1)

### Other Subjects

- English Language
- Biology
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- History
- Further Mathematics
- Current Affairs
- Civic Education
- Computer Studies
- Yoruba
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- French
- Home Economics
- Sweet Sixteen
- Fine Arts

Represent the question in a venn diagram, such that:

\(n(B \cap M) = x\)

\(n(B)\) only \(= 125-x\)

\(n(M)\) only \(= 110-x\)

\(\Rightarrow 125-x + 110-x + x = 220\)

\(\Rightarrow x = 15.\)

\(n(B)\) only \(= 125 - 15 = 110\)