What is the
probability that in a random sample of 12 such articles, 9 are defective In each of the following, choose the correct answer:
14 In a box containing 100 bulbs, 10 are defective The probability that out of a
sample of 5 bulbs, none is defective is
(A) 10–1
(B)
⎛215
⎞
⎜
⎟
⎝
⎠
(C)
⎛1095
⎞
⎜
⎟
⎝
⎠
(D)
9
10
15