# How can you tell if an argument is valid valid arguments are always sound?

**How can you tell if an argument is valid**?

**Valid arguments are always sound**. The premises lead logically to the conclusion.

**Valid arguments**are never

**sound**.

Besides, how can you tell if an argument is valid?

**Valid**: an **argument is valid if** and only **if** it is necessary that **if** all of the premises are true, then the conclusion is true; **if** all the premises are true, then the conclusion must be true; it is impossible that all the premises are true and the conclusion is false. **Invalid**: an **argument** that is not **valid**.

Also, can an argument be sound but invalid? Otherwise, a deductive **argument** is said to be **invalid**. A deductive **argument** is **sound** if and only if it is both valid, and all of its premises are actually true. Otherwise, a deductive **argument** is unsound. In effect, an **argument** is valid if the truth of the premises logically guarantees the truth of the conclusion.

Furthermore, how can you tell if an argument is sound it is valid and has true premises?

A **sound argument** must **have** a **true** conclusion. **TRUE**: **If an argument is sound**, then it is **valid and has** all **true premises**. Since it is **valid**, the **argument** is such **that if** all the **premises** are **true**, then the conclusion must be **true**.

Is every valid argument sound?

All **valid arguments** have all true premises and true conclusions. All **sound arguments** are **valid arguments**. If an **argument** is **valid**, then it must have at least one true premise. **Every valid argument** is a **sound argument**.