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Word of length 10 are formed using the letters A,B,C,D,E,F,G,H

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Word of length 10 are formed using the letters A,B,C,D,E,F,G,H,I,J. Let $x$ be the number of such words where no letter is repeated; and let $y$ be the number of such words where exactly one letter is repeated twice and no other letter is repeated. The, $\frac{y}{9 x} =$

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Word of length 10 are formed using the letters A,B,C,D,E,F,G,H,I,J. Let

x

be the number of such words where no letter is repeated; and let

y

be the number of such words where exactly one letter is repeated twice and no other letter is repeated. The,

\frac{y}{9 x} =

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Question Text	Word of length 10 are formed using the letters A,B,C,D,E,F,G,H,I,J. Let $x$ be the number of such words where no letter is repeated; and let $y$ be the number of such words where exactly one letter is repeated twice and no other letter is repeated. The, $\frac{y}{9 x} =$
Answer Type	Video solution: 1
Upvotes	151