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If every element of set X is in set Y then_____________(a) X⊂Y(b) Y⊂X(c) X=Y(d) X≠YI had been asked this question in exam.Question is from Subsets in section Sets of Mathematics – Class 11

Answer»

Correct option is (a) X⊂Y

Easiest explanation: If every element of set X is in set Y then X is CALLED subset of Y.X⊂Y.

But every element of Y MAY or may not be the element of X so we can’t say Y⊂X and HENCE we can’t DECIDE EQUALITY.


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