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prove that total number of ways of selection of r points out of n points in a row such that no two of them are consecutive C(n-r+1,r).

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साबित करें कि पंक्ति में एन बिंदुओं से आर बिंदुओं के चयन के तरीकों की कुल संख्या जैसे कि उनमें से कोई भी लगातार सी (एन-आर + 1, आर) नहीं है।

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