Which of the following is not a proposition-

Options

A. 7 is a prime
B. 3 is irational
C. Mathemetics is interesting
D. 5 is an even integer

Answer

To determine which of the following statements is not a proposition, we first need to understand what a proposition is. A proposition is a declarative statement that can be classified as either true or false, but not both.

Let's analyze the options provided:

1. **7 is a prime number.**
- This statement is a proposition because it can be evaluated as true (since 7 is indeed a prime number).

2. **√3 is irrational.**
- This statement is also a proposition because it can be evaluated as true (the square root of 3 cannot be expressed as a fraction of two integers).

3. **Mathematics is interesting.**
- This statement is not a proposition because it is subjective. Whether mathematics is interesting or not can vary from person to person. Thus, it cannot be definitively classified as true or false.

4. **5 is an even integer.**
- This statement is a proposition because it can be evaluated as false (5 is an odd integer).

Based on this analysis, the statement that is not a proposition is:

**Answer: Option 3 - "Mathematics is interesting."**