Select the code which is not correct about Venn diagram:

(a) Venn diagram represents propositions as well as classes.
(b) It can provide clear method of notation.
(c) It can be either valid or invalid.
(d) It can provide the direct method of testing the validity.

Anurag Mishra Professor Asked on 12th July 2016 in Teaching.
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    Answer: (c) It can be either valid or invalid.

    Anurag Mishra Professor Answered on 13th July 2016.
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