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Which of the following pairs of sets are...

Which of the following pairs of sets are equals? Give reasons.
(i) A={x:x is a letter of word FOWL}
B={x:x is a letter of word WOLF}
(ii) `A=phi and B={x:x in N and 3x^(2)+3 lt 3}`
(iii) `A={M,A,N}, B={W,O,M,A,N}`

Text Solution

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(i) `A={F,O,W,L}, B={W,O,L,F} Rightarrow A=B`
(ii) `A= phi, B=phi" so "A=B`
(iii) `A={M,A,N}, B={W,O,M,A,N} Rightarrow A ne B`
as `W in B" but "W in A`
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