यदि \(U={1,2,\ldots,20}\), \(A=\{1,4,9,16\}\) और \(B=\{3,6,9,12,15,18\}\), तो \(A\cap B'\) क्या है?
If \(U={1,2,\ldots,20}\), \(A=\{1,4,9,16\}\) and \(B=\{3,6,9,12,15,18\}\), what is \(A\cap B'\)?
Explanation opens after your attempt
Correct Answer
A. ({1,4,16})
Concept
\(A\cap B'\) means elements in (A) but not in (B). Removing (9) from (A) gives ({1,4,16}).
Why this answer is correct
The correct answer is A. ({1,4,16}). \(A\cap B'\) means elements in (A) but not in (B). Removing (9) from (A) gives ({1,4,16}).
Exam Tip
\(A\cap B'\) का अर्थ है (A) में हों पर (B) में न हों। (A) से (9) हटाने पर ({1,4,16}) मिलता है।
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