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
Correct Answer

A. 0

Step 1

Concept

The remainder of (p) is 19.

Step 2

Why this answer is correct

The remainder of (7p-18) comes from \(7\times19-18=115\).

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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?

Correct Answer: A. 0. Explanation: 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। / Step 1: The remainder of (p) is 19. Step 2: The remainder of (7p-18) comes from \(7\times19-18=115\). Step 3: Since \(115=23\times5\), the final remainder is 0.

Which concept should I revise for this Mathematics MCQ?

The remainder of (p) is 19.

What exam hint can help solve this Mathematics question?

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।