A can hit a target 4 times in 5 shots B three times in 4 shots and C twice
in 3 shots. They fire a volley. What is the probability that atleast two shots
hit.

• I am not sure but I 'll try.
  
  A's prob of hitting shot = 4/5
  B's prob of hitting shot = 3/4
  C's prob of hitting shot= 2/3
  probability that atleast two shots hit = 4/5 * 3/4 + 3/4*2/3 = 2/3 * 4/5 = 3/5 + 1/2 + 8/15 = 49/15
  
• 11 years agoHelpfull: Yes(4) No(5)
• A's prob of hitting shot = 4/5 prob not hit = 1/5
  B's prob of hitting shot = 3/4 prob not hit = 1/4
  C's prob of hitting shot= 2/3 prob not hit = 1/3
  atleast 2 means 2 or 3 if 2 hit and one not and all 2 hit
  probability that atleast two shots hit = 4/5 * 3/4 *1/3 + 3/4 * 2/3 *1/5+2/3*4/5*1/4 + 2/3*4/5*1/4 = 5/6
• 11 years agoHelpfull: Yes(3) No(4)