Example 8
Mouse over the buttons to see the Venn diagram representation of the associated statements.


All authorized reports are trustworthy.
Some false reports are not authorized.
The combined Venn diagram.


Try to determine if the conclusion

some false reports are not trustworthy

is contained in the combined Venn diagram and then check your answer.

If the conclusion is contained in the combined Venn diagram, then the conclusion is valid.

If the conclusion is not contained in the combined Venn diagram, then the conclusion is not valid.