Mathematics · Set Theory
मान लीजिए R पूर्णांकों के समुच्चय ℤ पर एक तुल्यता संबंध (equivalence relation) है जो एक फलन (function) भी है। यदि [0], 0 के तुल्यता वर्ग को दर्शाता है, तो [0] में अवयवों की संख्या किसके बराबर है?
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