Questions
Given a non empty set & consider P(X) which is the set of all subsets of X. Define the relation R in P(X) as follows:
For subsets A, B in P(X), ARB if and only it A B. Then R is not
detailed solution
Correct option is C
Since every set is a subset of itself, ARA for all A∈P(X)Therefore, .R is reflexive. Let ARB⇒A⊂B . This cannot be implied to B⊂A . For instant, if A={1,2} and B={1,2,3}, then it cannot be implied that B is related to A. Therefore, R is not symmetric. Further if ARB and BRC , then A⊂B and B⊂C . ⇒ A⊂C⇒ ARCTherefore, R is transitive. Hence, R is not an equivalence relation since it is not symmetricTalk to our academic expert!
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