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सिद्ध कीजिए कि |{:(x+1,x+2,x+a),(x+2,x+...

सिद्ध कीजिए कि `|{:(x+1,x+2,x+a),(x+2,x+3,x+b),(x+3,x+4,x+c):}|=0` जहाँ a,b,c समान्तर श्रेणी में हैं ।

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