The symmetric difference of A and B is

(a)

(b)

(c)

(d)

Its answer given in the book is (b). But I found that (c) and (d) are also true. Am I right? If not please tell why. Thanks a lot for giving me your time.

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- September 3rd 2009, 02:09 AMninniSymmetric Difference
The symmetric difference of A and B is

(a)

(b)

(c)

(d)

Its answer given in the book is (b). But I found that (c) and (d) are also true. Am I right? If not please tell why. Thanks a lot for giving me your time. - September 3rd 2009, 04:49 AMGrandadSymmetric Difference
- September 5th 2009, 01:09 PMResearcher
Yes you are right about (c).[I dindn'ttry to prove the others].

One of the proofs of (c):

http://www.picamatic.com/show/2009/0...0_bigthumb.JPG