Zero=0.8; One=0.2; OutputZeroIfInputZero=0.8; OutputOneIfInputOne=0.9;
OneAndOne=One*OutputOneIfInputOne
InputOneIfOutputOne=OneAndOne/(OneAndOne+Zero*(1-OutputZeroIfInputZero))
![[Graphics:../Images/prob_gr_17.gif]](../Images/prob_gr_17.gif){kind=small}
![[Graphics:../Images/prob_gr_18.gif]](../Images/prob_gr_18.gif){kind=small}