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

If R is an equivalence relation on a set A, which statement about its equivalence classes is correct?

Answer and explanation

Correct answer: They form a partition of A

For an equivalence relation R, the equivalence class of an element a is [a] = {x in A : xRa}. Reflexivity ensures that a belongs to [a], so every class is non-empty and all elements of A are covered. If two classes have even one common element, symmetry and transitivity show that their representatives are related, so the two classes are actually identical. Thus distinct classes are disjoint, while their union is A. These are precisely the defining features of a partition of A. Therefore option A is correct. Classes need not be singletons; for example, congruence modulo 2 gives classes of several elements. They are not empty, and distinct classes do not overlap.

Related tags

RelationsEquivalence ClassesPartitionEquivalence 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.