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CBSE Class 11-science Answered

sets,subsets
Asked by topperswati | 02 Jan, 2010, 10:19: PM
answered-by-expert Expert Answer

Let a  (Z-Y)

a  Z   and   a  Y

So a  Z    and a  X  (since X  Y)

so a  (Z-X)

Hence, (Z-Y)   (Z-X).

 

Answered by | 04 Jan, 2010, 10:43: AM

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