The probability that A hits a target is 1/3 and the probability that B hits it is 2/5.What is the probability that the target will be hit , if each one of A and B shoots the Target?

Select one:
a. 1/6
b. 9/15
c. 5/6
d. 3/5

• 3/5
  
  the target will only miss when both A and B will miss it.
  
  prob of missing = 2/3*3/5 = 2/5
  
  prob of hit = 1-(prob of each A and B missing) = 1-2/5 = 3/5
• 9 years agoHelpfull: Yes(4) No(1)
• total prob=1/3*3/5+2/3*2/5+1/3*2/5=9/15
• 9 years agoHelpfull: Yes(1) No(0)
• b.9/15
  
  p(A)+p(B)=1/3 + 2/5 = 9/15
  
• 9 years agoHelpfull: Yes(0) No(2)
• a hit=1/3,a miss=2/3;
  b hit=2/5,b miss=3/5;
  so total hitting probability=1/3*3/5+2/5*2/3+1/3*2/5=9/15
• 9 years agoHelpfull: Yes(0) No(1)