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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?

 

\(\phantom{1:8:40}\)

 Jan 10, 2023
 #1
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What about 1:2:3?  What about 2:4:7?  What about 1:8:40?

 Jan 11, 2023

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