If one bulb is taken out at random from a box of 600 electric bulb containing 12 defective bulbs ,then the probability of getting a non defective bulb is?
a. 0.78
b. 0.65
c. 0.98
d. 0.85

• No. of non-defective bulbs = 600 - 12 = 588
  
  p(getting a nondefective) = 588/600 = 0.98
• 10 years agoHelpfull: Yes(23) No(0)
• probability of getting defective bulb:12C1/600C1=12/600
  probability of getting non defective bulb=1-12/600=0.98
• 10 years agoHelpfull: Yes(2) No(2)