यदि \(A=\{1,2\}\) और \(B=\{a,b,c\}\) हैं, तो \(A\times B\) के सभी युग्मों में पहला घटक कितनी बार (1) होगा?
If \(A=\{1,2\}\) and \(B=\{a,b,c\}\), how many times will the first component be (1) in \(A\times B\)?
Explanation opens after your attempt
A. (3)
Concept
The element \(1\in A\) pairs with all (3) elements of (B). So the first component (1) appears (3) times.
Why this answer is correct
The correct answer is A. (3). The element \(1\in A\) pairs with all (3) elements of (B). So the first component (1) appears (3) times.
Exam Tip
\(1\in A\) के साथ (B) के सभी (3) अवयव जुड़ेंगे। इसलिए पहला घटक (1) कुल (3) बार आएगा।
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