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Recently Referred Formulae

p_{[a-b]}=p_afrac{p_b}{1-p_a}+p_bfrac{p_a}{1-p_b}
p_a,p_b,p_c,p_dcdots
\;\;\;\;\;+p_b\frac{p_c}{1-p_b}\frac{p_a}{1-p_b-p_c}+p_c\frac{p_a}{1-p_c}\frac{p_b}{1-p_a-p_c}+p_c\frac{p_b}{1-p_c}\frac{p_a}{1-p_b-p_c}
\;\;\;\;\;+p_b\frac{p_c}{1-p_b}\frac{p_a}{1-p_-p_b}+p_c\frac{p_a}{1-p_c}\frac{p_b}{1-p_a-p_c}+p_c\frac{p_b}{1-p_c}\frac{p_a}{1-p_b-p_c}
\;\;\;\;\;+p_b\frac{p_c}{1-p_b}\frac{p_a}{1-p_a-p_b}+p_c\frac{p_a}{1-p_c}\frac{p_b}{1-p_a-p_c}+p_c\frac{p_b}{1-p_c}\frac{p_a}{1-p_b-p_c}