यदि (p=23q+19), तो (7p-18) को 23 से भाग देने पर शेषफल क्या होगा?
If (p=23q+19), what is the remainder when (7p-18) is divided by 23?
Explanation opens after your attempt
A. 0
Concept
The remainder of (p) is 19.
Why this answer is correct
The remainder of (7p-18) comes from \(7\times19-18=115\).
Exam Tip
Since \(115=23\times5\), the final remainder is 0. चरण 1: (p) का शेषफल 19 है। चरण 2: (7p-18) का शेषफल \(7\times19-18=115\) से मिलेगा। चरण 3: \(115=23\times5\), इसलिए अंतिम शेषफल 0 है।
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