Hard Mathematics Chapter 1: Real Numbers Class 10 Level 1

किसी संख्या को 4 से भाग देने पर शेषफल 1 या 3 है। उसके वर्ग को 4 से भाग देने पर शेषफल क्या होगा?

A number leaves remainder 1 or 3 when divided by 4. What will be the remainder when its square is divided by 4?

Explanation opens after your attempt
Correct Answer

B. 1

Step 1

Concept

The possible remainders are 1 and 3.

Step 2

Why this answer is correct

\(1^2=1\) and \(3^2=9=4\times2+1\), so the remainder is 1 in both cases.

Step 3

Exam Tip

The square of an odd number leaves remainder 1 when divided by 4. चरण 1: संभावित शेषफल 1 और 3 हैं। चरण 2: \(1^2=1\) और \(3^2=9=4\times2+1\), इसलिए दोनों स्थितियों में शेषफल 1 है। चरण 3: विषम संख्या के वर्ग का 4 से शेषफल 1 होता है।

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What is the correct answer to this Mathematics MCQ?

The correct answer is B. 1.

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