How many positive terms are there in the sequence \( \left(x_{n}\ri...

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How many positive terms are there in the sequence \( \left(x_{n}\right) \)
P if \( x_{n}=\frac{195}{4 P_{n}}-\frac{{ }^{n+3} A_{3}}{P_{n+1}}, n \in N \) ?

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