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If nCr : (n+1)Cr : (n+2)Cr = 1:3:7, find the values of n and r.

If nCr : (n+1)Cr : (n+2)Cr = 1:3:7, find the values of n and r.
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If nCr : (n+1)Cr : (n+2)Cr = 1:3:7, find the values of n and r.

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User Nutscracker
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1 Answer

3 votes

Answer:

r=4, n=5

Explanation:

answered
User Stroniax
by
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