n विभिन्न वस्तुओं में से r वस्तु के चयन के कुल तरीके जबकि प्रत्येक वस्तु कितनी भी बार चयन में सम्मिलित की जा सकती हो
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All type of elect any thing n! /r! (n-r)!
All type of elect any thing n! /r! (n-r)!
GHANSHYAM11111:
nCr
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