The number of rooted trees (NR) for n taxa is ______ – McqOptions

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1.	The number of rooted trees (N_R) for n taxa is ______
A.	N<sub>R</sub> = (2n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 3)! /2<sup>n+2</sup> (n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 2)!
B.	N<sub>R</sub> = (2n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 3)! /2<sup>n</sup> (n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 2)!
C.	N<sub>R</sub> = (2n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 3)! /2<sup>n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â†2</sup> (n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 5)!
D.	N<sub>R</sub> = (2n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 3)! /2<sup>n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â†2</sup> (n‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† 2)!
Answer» E.

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