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Yeah, It's 30
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Yeah it's 30 Here's the solution: From the given equality of probabilities, we get $\frac{x+1}{x^{2}+5} = \frac{x-3}{x^{2}+5-20}$. Cross multiplying, we see that this is equivalent to $(x+1)(x^{2}-15) = (x^{2}+5)(x-3)$. Multiplying out each side with the
