Question

plz solve the 4th, 5th and 6th one

Answer 1

Hii I am solving 6th one only
total bulbs = 200
no. of defective bulbs=12
p(getting non defective bulb)= 200-12/200
188/200
94/100
47/50

Answer 2

6.number of defective bulbs=12
probability of getting a defective bulb=12/200
therefore probability of getting a non defective bulb=1-(12/200)
47/50