Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
1 reads0 ratings0 helpful

A student says that \(4+\sqrt{3}\) is a rational number because 4 is rational. Which statement correctly explains the error?

Answer and explanation

Correct answer: If \(4+\sqrt{3}\) were rational, subtracting 4 would make \(\sqrt{3}\) rational, which is impossible.

Assume \(4+\sqrt{3}\) is rational. Since 4 is rational, subtracting it would make \(\sqrt{3}\) rational, contradicting its irrationality. Hence the sum is irrational. Exam tip: adding or subtracting a rational number does not change irrationality.

Related tags

Number SystemsIrrational NumbersSquare Root 3Rational NumbersError AnalysisProof Of Irrationality Of Square Root 2 And Square Root 3MathematicsClass 9 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.