यदि \(A=\{0,1,2\}\) और \(B=\{1,2,3\}\), तो \(A\times B\) में \(a^b=1\) वाले युग्मों की संख्या कितनी है?
If \(A=\{0,1,2\}\) and \(B=\{1,2,3\}\), how many pairs in \(A\times B\) satisfy \(a^b=1\)?
Explanation opens after your attempt
C. (3)
Concept
When (a=1), \(1^b=1\) for every \(b\in B\). Hence there are (3) pairs.
Why this answer is correct
The correct answer is C. (3). When (a=1), \(1^b=1\) for every \(b\in B\). Hence there are (3) pairs.
Exam Tip
(a=1) होने पर \(1^b=1\) सभी \(b\in B\) के लिए सही है। इसलिए (3) युग्म मिलते हैं।
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