Concept-wise Practice

common error MCQ Questions for Class 10

common error se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with common error.

Question 1/1 Medium Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 17

एक विद्यार्थी ने लिखा \(\sqrt{3}=\frac{p}{q}\), इसलिए \(3=\frac{p}{q}\)। गलती क्या है?

A student writes \(\sqrt{3}=\frac{p}{q}\), so \(3=\frac{p}{q}\). What is the mistake?

Explanation opens after your attempt
Correct Answer

A. दोनों ओर वर्ग नहीं किया गयाBoth sides were not squared

Step 1

Concept

To get (3) from \(\sqrt{3}\), both sides must be squared.

Step 2

Why this answer is correct

The correct form is \(3=\frac{p^2}{q^2}\), not \(3=\frac{p}{q}\).

Step 3

Exam Tip

Always square both sides to remove a square root. चरण 1: \(\sqrt{3}\) से (3) पाने के लिए दोनों ओर वर्ग करना होता है। चरण 2: सही रूप \(3=\frac{p^2}{q^2}\) होगा, \(3=\frac{p}{q}\) नहीं। चरण 3: वर्गमूल हटाते समय दोनों ओर वर्ग अवश्य करें।

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