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Let y=1/(2+1/(1+1/(2+1/(1+1/( ))))) ...

Let `y=1/(2+1/(1+1/(2+1/(1+1/( )))))` , then the value of `y` is a.`(sqrt(3)-1)/2` b. `2/(sqrt(15)+3)` c. `(sqrt(15)+3)/2` d. `1/(sqrt(3)+1)`

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