Select the code, which is not correct about Venn diagram:
Anonymous Quiz
27%
Venn diagram represents propositions as well as classes.
27%
It can provide clear method of notation.
25%
It can be either valid or invalid.
20%
It can provide the direct method of testing the validity.
If the proposition ‘All thieves are poor’ is false, which of the following propositions can be claimed certainly to be true?
Anonymous Quiz
15%
Some thieves are poor.
45%
Some thieves are not poor.
15%
No thief is poor.
25%
No poor person is a thief.