en.wikipedia.org/wiki/Validity

The corresponding conditional of a valid **argument** is a logical truth and the
negation of its corresponding conditional is a contradiction. The conclusion is a
logical consequence of its premises. An **argument** that is not valid is said to be "
**invalid**". An **example** of a valid **argument** is given by the following well-known
syllogism:.

criticalthinkeracademy.com/courses/what-is-a-good-argument/lectures/1105072

Jun 3, 2016 **...** Or to put it another way, the truth of the premises guarantees the truth of the
conclusion. These are all different ways of saying the same thing. Validity is the
strongest possible logical glue you can have between premises and conclusion.
Here's an **example** of an **INVALID argument**: 1. All actors are robots. 2.

academic.csuohio.edu/polen/LC9_Help/1/14tfi.htm

For either **example**, the logic is invalid but the premises are true. Here the
conclusion is false. Invalidity is a no guarantee of a true conclusion when the
premises are true. True premises can lead to either a true or a false conclusion in
an **invalid argument**. In these **examples**, bad luck rather than bad logic led to the
false ...

academic.csuohio.edu/polen/LC9_Help/1/14fti.htm

For either **example**, the logic is **invalid** and the premises are false. For the
premises to be true, all of them need to be true. But, for the premises to be false,
only one need be false. So, an **argument** with a mixture of true and false
premises is still considered to be an **argument** with false premises--it is false that
all of the ...

faculty.uncfsu.edu/jyoung/spotting_invalid_arguments.htm

How do we show that an **argument** is **invalid**? If we show that an **argument** is
**invalid**, what do we do then? Remember that an **argument** is valid if it is
impossible for the premises to be true and the conclusion false at the same time.
To show that an **argument** is **invalid**, we must give an **example** of a possibility in
which the ...

ethicalrealism.wordpress.com/2011/06/17/examples-of-valid-invalid-logical-reasoning

Jun 17, 2011 **...** I have described formal logic, said a little about why it's important for proper
reasoning, and described how we can prove **arguments** to be logically **invalid**
through counterexamples. I will now give **examples** of valid and **invalid** logical
**arguments** to help illustrate the difference and help us learn how to ...

kslinker.com/VALID-AND-INVALID-ARGUMENTS.html

ALL ARGUMENTS CAN BE CLASSIFIED INTO TWO TYPES, VALID AND
INVALID. ... Here are some common **examples** of valid arguments:: ... **Invalid**
**Arguments**. If an argument is invalid, then it is possible for the conclusion to be
false even if all the premises are true. **Invalid arguments** come in all sorts of
flavors, and ...

www.iep.utm.edu/val-snd

The second **example** may seem like a good argument because the premises and
the conclusion are all true, but note that the conclusion's truth isn't guaranteed by
the premises' truth. It could have been possible for the premises to be true and
the conclusion false. This argument is invalid, and all **invalid arguments** are ...

www.jimpryor.net/teaching/vocab/validity.html

Jan 26, 2007 **...** Here are some more **examples of invalid arguments**: The Argument, Its Form. If
there is a hedgehog in my gas tank, then my car will not start. My car will not start.
Hence, there must be a hedgehog in my gas tank. If P then Q. Q. So P. If I publicly
insult my mother-in-law, then my wife will be angry at me.