Hard Mathematics Chapter 1: Real Numbers Class 10 Level 2

यदि किसी पूर्णांक को 3 से भाग देने पर शेषफल 2 है, तो \(n^2+n+1\) को 3 से भाग देने पर शेषफल क्या होगा?

If an integer leaves remainder 2 when divided by 3, what is the remainder when \(n^2+n+1\) is divided by 3?

Explanation opens after your attempt
Correct Answer

B. 1

Step 1

Concept

Replace (n) by its remainder 2.

Step 2

Why this answer is correct

The remainder of \(n^2+n+1\) comes from \(2^2+2+1=7\), and 7 leaves remainder 1 when divided by 3.

Step 3

Exam Tip

In polynomial-like expressions, substituting the remainder makes the solution simple. चरण 1: (n) की जगह शेषफल 2 रखें। चरण 2: \(n^2+n+1\) का शेषफल \(2^2+2+1=7\) से मिलेगा, और 7 का 3 से शेषफल 1 है। चरण 3: बहुपद जैसे व्यंजकों में संख्या की जगह उसका शेषफल रखने से हल सरल हो जाता है।

FAQs

Mathematics Question FAQs

What is the correct answer to this Mathematics MCQ?

The correct answer is B. 1.

Where can I practice more Mathematics questions?

Open the subject page or level quiz links on this page to practice more active Mathematics MCQs with answers and explanations.

Related Mathematics Questions

Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.