Hard Mathematics Chapter 1: Real Numbers Class 10 Level 2

यदि कोई संख्या 8 से भाग देने पर शेषफल 3 देती है, तो उसके घन को 8 से भाग देने पर शेषफल क्या होगा?

If a number leaves remainder 3 when divided by 8, what is the remainder when its cube is divided by 8?

Explanation opens after your attempt
Correct Answer

B. 3

Step 1

Concept

The cube remainder comes from \(3^3=27\).

Step 2

Why this answer is correct

\(27=8\times3+3\), so the remainder is 3.

Step 3

Exam Tip

In power questions, keep the calculation small by using the remainder. चरण 1: घन का शेषफल \(3^3=27\) से मिलेगा। चरण 2: \(27=8\times3+3\), इसलिए शेषफल 3 है। चरण 3: घात वाले प्रश्नों में शेषफल को छोटा रखकर गणना करें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is B. 3.

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