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Recently Referred Formulae

p_{a-b-c}=p_a\\frac{p_b}{1-p_a}\\frac{p_c}{1-p_a-p_b}
p_{[a-b]}=p_a\\frac{p_b}{1-p_a}+p_b\\frac{p_a}{1-p_b}
p_{[a-*-*]}=p_a+\sum_{n\neq a} p_n \frac{p_a}{1-p_n}+sum_{n\neq m,a}\sum_{m\neq a} p_m\frac{p_n}{1-p_m}\frac{p_a}{1-p_m-p_n}
\sum_{n\neq a} p_n\frac{p_a}{1-p_n}=p_b\frac{p_a}{1-p_b}+p_c\frac{p_a}{1-p_c}+p_d\frac{p_a}{1-p_d}+p_efrac{p_a}{1-p_e}
p_{[a-*-*]}=p_a+\sum_{n\neq a} p_n \frac{p_a}{1-p_n}+sum_{n\neq m,a}sum_{m\neq a} p_m\frac{p_n}{1-p_m}\frac{p_a}{1-p_m-p_n}