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## SS1: MATHEMATICS - 2ND TERM

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Lesson 7, Topic 2
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# Open & Closed Statements

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#### Topic Content:

• Closed Statements
• Open Statements

### Closed Statements:

Definition:  Statements are said to be closed statements if such statements are about well-defined things, however, they could either be true or false.

### Open Statements:

Definition: These are statements that are not about well-defined things.

In logical context, questions, commands, sayings and exclamations are not considered to be statements, they are usually termed as “not applicable”.

### Example 7.2.1:

For each of the following expressions, say whether it is a closed or an open statement or neither; also whether it is true or false. Please give your answer in tabular form.

A: Akure is in Nigeria

B: Accra is the capital of Libya

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