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If a+b+c=11 and a b+b c+c a=20 , then th...

If `a+b+c=11` and `a b+b c+c a=20` , then the value of the expression `a^3+b^3+c^3-3a b c` will be (a) 121 (b) 341 (c) 671 (d) 781

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