Muft Shiksha
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
Class 10MathematicsReal NumbersIrrational numbersHardLevel 15

In which option is the number rational?

Advertisement

Answer and explanation

Correct answer: ((\sqrt{11}+1)(\sqrt{11}-1))

Step 1: ((\sqrt{11}+1)(\sqrt{11}-1)) is a conjugate product. Step 2: Its value is (11-1=10), which is rational. Step 3: In conjugate forms, irrational terms can cancel.

Tags

conjugate productrational numberclass 10

Frequently asked questions

What is the correct answer to this question?

((\sqrt{11}+1)(\sqrt{11}-1))

Why is this the correct answer?

Step 1: ((\sqrt{11}+1)(\sqrt{11}-1)) is a conjugate product. Step 2: Its value is (11-1=10), which is rational. Step 3: In conjugate forms, irrational terms can cancel.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Irrational numbers.

Report question
Advertisement