यदि \(A=\{0,1,2,3,4\}\), \(B=\{0,1,2,3,4\}\) और (R={(a,b):\(a^2\equiv b \pmod{5}\)}) है, तो (|R|) क्या है?
If \(A=\{0,1,2,3,4\}\), \(B=\{0,1,2,3,4\}\), and (R={(a,b):\(a^2\equiv b \pmod{5}\)}), what is (|R|)?
Explanation opens after your attempt
C. (5)
Concept
For each (a), exactly one residue for (b) appears in (B). Therefore there are (5) pairs.
Why this answer is correct
The correct answer is C. (5). For each (a), exactly one residue for (b) appears in (B). Therefore there are (5) pairs.
Exam Tip
प्रत्येक (a) के लिए (b) का ठीक एक अवशेष (B) में मिलता है। इसलिए कुल (5) युग्म हैं।
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