यदि \(A=\{1,2,3,4,5,6\}\) पर (aRb) तब और केवल तब जब \(a\equiv b \pmod{3}\), तो ([2]) क्या है?
If (aRb) on \(A=\{1,2,3,4,5,6\}\) iff \(a\equiv b \pmod{3}\), then what is ([2])?
Explanation opens after your attempt
A. ({2,5})
Concept
The elements giving the same remainder (2) modulo (3) are (2) and (5). Hence ([2]={2,5}).
Why this answer is correct
The correct answer is A. ({2,5}). The elements giving the same remainder (2) modulo (3) are (2) and (5). Hence ([2]={2,5}).
Exam Tip
(2) के समान \( \pmod{3}\) शेष (2) देने वाले अवयव (2) और (5) हैं। इसलिए ([2]={2,5}) है।
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