Hyan5628 Hyan5628

29-12-2023
Mathematics

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A woman has 11 close friends. The number of ways in which she can invite 5 of them to dinner, if two particular of them are not on speaking terms and will not attend together, is
A. ¹¹C₅−⁹C₃
B. ⁹C₅+2×⁹C₄
C. 3×⁹C₄
D. ⁹C₄

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