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
0 reads0 ratings0 helpful

How will (7.818181...) be classified as a real number?

Answer and explanation

Correct answer: Rational real number

Direct answer: option B, rational real number. The digits 81 repeat without stopping, so the number is \(7.818181\ldots=7.\overline{81}\). Every terminating or recurring decimal can be represented as a ratio of integers, so it is rational. Option A is wrong because irrational numbers have non-terminating, non-repeating decimals. Option B is correct because the repeating block is visible. Option C is wrong: an integer is a whole number such as 7 or 8, whereas this number has a fractional part and lies between them. Option D is wrong because the decimal is meaningful and defined. A useful test is to look for a fixed repeating block; repetition proves rationality.

Related tags

Real NumbersRepeating DecimalRational

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.