Question

Which of the following sentences are statements: 

1. There are 35 days in a month.

2. Mathematics is difficult.

3.The sum of 5 and 7 is greater than 10.

4. The square of a number is an even number.

5. The sides of a quadrilateral have equal length.

6. Answer this question

7. The product of -1 and 8 is -8.

8. The sum interior angles of a triangle is 180.

9. Today is a windy day.

10. All real numbers are complex numbers.

Answer 1

1. No month have 35 days. Hence it is a statement.

2. Here the correctness of the sentence depends upon the observer. So the sentence is not a statement.

3. The sentence is true so it is a statement.

4. Here the correctness of the sentence depends upon the observer. So the sentence is not a statement.

5. This sentence is sometimes true and some time false. So the sentence is not a statement.

6. This sentence is an order. So the sentence is not a statement.

7. The sentence is true so it is a statement.

8. The sentence is true so it is a statement.

9. It is not clear from the context which day is referred. Hence not a statement.

10. The sentence is true, so it is a statement.