Probability of hitting the forget =0.3 Ifโn' is the no. of times that the Missile is fired โด Probability of hitting at least once=1โ[1โ0.3]n=0.8 0.7n=0.2 nโlogโ0.7=logโ0.2 โn=4.512 for n=4;=p<0.8 take n=5 n=5 Hence 5 missiles should be fired so that there is at least 80% prob. that the target is hit.