xxxeol РЕШЕНИЕ
Попал - p1 = 0.3, мимо -  q1 = 1 - p1 = 0.7 - для первого орудия
Для второго орудия - p2 = 0.8, q2 = 0.2
X1 = p1 = 0,3
Y2 = q1*p2 = 0.7*0.8 = 0.56
X3 = q1*q2*p1 = 0.7*0.2*0.3 = 0.042
Y4 =  q1*q2*q1*p2 = 0.7*0.2*0.7*0.8 =0.0784
X5 = q1*q2*q1*q2*p1 =0.7*0.2*0.7*0.2*0.3 = 0.00588
Y6 = q1*q2*q1*q2*q1*p2 = 0.7³*0.2²*0.8 =  0.010976