यदि \((x,y)\in {12}\times{1,2,3}\) है, तो (x) का मान क्या होगा?
If \((x,y)\in {12}\times{1,2,3}\), what is the value of (x)?
Explanation opens after your attempt
A. (12)
Concept
The first component comes from the first set ({12}), so (x=12). Match the first position with the first set.
Why this answer is correct
The correct answer is A. (12). The first component comes from the first set ({12}), so (x=12). Match the first position with the first set.
Exam Tip
पहला घटक पहले समुच्चय ({12}) से आता है, इसलिए (x=12)। पहले स्थान को पहले समुच्चय से मिलाएं।
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