यदि (u=15q+8), तो \(u^2-u\) को 15 से भाग देने पर शेषफल क्या होगा?
If (u=15q+8), what is the remainder when \(u^2-u\) is divided by 15?
Explanation opens after your attempt
B. 11
Concept
The remainder of (u) is 8.
Why this answer is correct
The remainder of \(u^2-u\) comes from \(8^2-8=56\).
Exam Tip
\(56=15\times3+11\), so the remainder is 11. चरण 1: (u) का शेषफल 8 है। चरण 2: \(u^2-u\) का शेषफल \(8^2-8=56\) से मिलेगा। चरण 3: \(56=15\times3+11\), इसलिए शेषफल 11 है।
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