Hard Mathematics Chapter 1: Real Numbers Class 10 Level 2

यदि (a) को 9 से भाग देने पर शेषफल 4 है और (b) को 9 से भाग देने पर शेषफल 7 है, तो (2a+b) को 9 से भाग देने पर शेषफल क्या होगा?

If (a) leaves remainder 4 when divided by 9 and (b) leaves remainder 7 when divided by 9, what is the remainder when (2a+b) is divided by 9?

Explanation opens after your attempt
Correct Answer

B. 6

Step 1

Concept

In (2a+b), the remainder part is \(2\times4+7=15\).

Step 2

Why this answer is correct

(15=9+6), so the remainder is 6.

Step 3

Exam Tip

In such questions, handle the remainder of each term separately. चरण 1: (2a+b) में शेषफल \(2\times4+7=15\) होगा। चरण 2: (15=9+6), इसलिए शेषफल 6 है। चरण 3: ऐसे प्रश्नों में प्रत्येक पद का शेषफल अलग संभालें।

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The correct answer is B. 6.

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