Find n and r if .^(n)C(r):^(n)C(r+1):^(...

Find n and r if `.^(n)C_(r):^(n)C_(r+1):^(n)C_(r+2)=1:2:3`.

Text Solution

Verified by Experts

The correct Answer is:

n=14,r=4

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Knowledge Check

.^(n-1)C_(r)+^(n-1)C_(r-1)=

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1

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CHHAYA PUBLICATION-PERMUTATION AND COMBINATION -EXERCISE 7B ( Short Answer Type Questions )

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