Expert Mathematics Chapter 1: Real Numbers Class 10 Level 2

यदि (a) को 19 से भाग देने पर शेषफल 11 है और (b) को 19 से भाग देने पर शेषफल 16 है, तो (5a+4b) को 19 से भाग देने पर शेषफल क्या होगा?

If (a) leaves remainder 11 when divided by 19 and (b) leaves remainder 16 when divided by 19, what is the remainder when (5a+4b) is divided by 19?

Explanation opens after your attempt
Correct Answer

B. 5

Step 1

Concept

In (5a+4b), the remainder part is \(5\times11+4\times16=119\).

Step 2

Why this answer is correct

\(119=19\times6+5\), so the remainder is 5.

Step 3

Exam Tip

In multi-term expressions, handle each term’s remainder separately. चरण 1: (5a+4b) में शेषफल \(5\times11+4\times16=119\) होगा। चरण 2: \(119=19\times6+5\), इसलिए शेषफल 5 है। चरण 3: कई पदों में हर पद के शेषफल को अलग संभालें।

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The correct answer is B. 5.

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