यदि \(A=\{2,4,6,8\}\) और \(B=\{1,3\}\) हैं, तो \(A\times B\) में पहले घटकों का समुच्चय क्या है?
If \(A=\{2,4,6,8\}\) and \(B=\{1,3\}\), what is the set of first components in \(A\times B\)?
Explanation opens after your attempt
B. ({2,4,6,8})
Concept
Since (B) is non-empty, every element of (A) appears as a first component. Therefore the set of first components is (A).
Why this answer is correct
The correct answer is B. ({2,4,6,8}). Since (B) is non-empty, every element of (A) appears as a first component. Therefore the set of first components is (A).
Exam Tip
क्योंकि (B) अरिक्त है, (A) का हर अवयव पहले घटक के रूप में आएगा। इसलिए पहले घटकों का समुच्चय (A) है।
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