SOLUTION: Given that: 8( n+1Cn-1 ) = 5( nC1 )^2. Find the value of n
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Question 1136688: Given that: 8( n+1Cn-1 ) = 5( nC1 )^2. Find the value of n
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
(n+1)C(n-1) is the same as (n+1)C(2). Then the equation is 8*((n+1)C(2)) = 5*(nC1)^2
ANSWER: n=4
CHECK:
8*5C3 = 8*5C2 = 8*10 = 80
5*(4C1)^2 = 5*16 = 80
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