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Calculate the value of ^8C5.(a) 79(b) 43(c) 120(d) 56This question was addressed to me in semester exam.My doubt stems from Counting in division Counting of Discrete Mathematics

Answer»

The correct choice is (d) 56

The explanation is: We can use the formula ^nCk = \(\FRAC{n!}{K!(n-k)!}\) to CALCULATE the value of ^8C5 = \(\frac{8!}{5!(8-5)!}\) = 56.



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