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(a) Simplify (n/k)/(n/(k - 1))

 

(b) For some positive integer n, the expansion of (1 + x)^n has three consecutive coefficients a, b, c that satisfy 1:8:28.   What must n be?

 Jan 12, 2023
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a) 

(n/k) / (n / (k - 1)) ==(n/k) x  (k - 1) / n ==(k - 1) / k

 

b) See the answer here:  https://web2.0calc.com/questions/counting-solutions

 Jan 12, 2023

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