Concept-wise Practice

complete reasoning MCQ Questions for Class 10

complete reasoning 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 complete reasoning.

Question 1/1 Hard Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 16

कौन सा विकल्प \(\sqrt{5}\) की सिद्धि में सही और पूर्ण तर्क देता है?

Which option gives a correct and complete reasoning in the proof of \(\sqrt{5}\)?

Explanation opens after your attempt
Correct Answer

A. \(p^2=5q^2\) से (p=5k), फिर (q=5r), इसलिए सहअभाज्य शर्त से विरोधाभासFrom \(p^2=5q^2\), (p=5k), then (q=5r), so contradiction with coprime condition

Step 1

Concept

From \(p^2=5q^2\), (p) is divisible by (5), so (p=5k).

Step 2

Why this answer is correct

Substitution gives (q) also divisible by (5), so (q=5r).

Step 3

Exam Tip

Common factor (5) contradicts the coprime condition. चरण 1: \(p^2=5q^2\) से (p) (5) से विभाज्य है और (p=5k)। चरण 2: रखने पर (q) भी (5) से विभाज्य मिलता है, यानी (q=5r)। चरण 3: दोनों में (5) साझा होना सहअभाज्य शर्त से विरोधाभास है।

Open Question Page
Ask Friends
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.