यदि (u=18q+11), तो \(u^2-u\) को 18 से भाग देने पर शेषफल क्या होगा?
If (u=18q+11), what is the remainder when \(u^2-u\) is divided by 18?
Explanation opens after your attempt
B. 2
Concept
The remainder of (u) is 11.
Why this answer is correct
The remainder of \(u^2-u\) comes from \(11^2-11=110\).
Exam Tip
\(110=18\times6+2\), so the remainder is 2. चरण 1: (u) का शेषफल 11 है। चरण 2: \(u^2-u\) का शेषफल \(11^2-11=110\) से मिलेगा। चरण 3: \(110=18\times6+2\), इसलिए शेषफल 2 है।
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