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 many symmetric relations on (A={1,2,3}) contain ((1,2))?

Answer and explanation

Correct answer: (16)

Step 1: For (n=3), the total independent choices are (\frac{3\cdot4}{2}=6). Step 2: Including ((1,2)) forces ((2,1)), so one non-diagonal block is fixed. Step 3: The remaining independent choices are (4), so the number is (2^4=16).

Related tags

Counting With ConditionSymmetric RelationsClass 12Symmetric RelationRelations And FunctionsMathematicsClass 12 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.