Question 6 In a box of 11 parts, 4 of the parts are defective. Two parts are selected at random without replacement. Find the probability that both parts are defective.

Question

asked Nov 23, 2021 67.2k views

1 Answer

Wruckie · Answer 1 · 2021-11-29T09:37:09+0000

The probability that both parts are defective is 6/55

Explanation:

Defective parts = 4

Total parts = 11

Probability of getting a defective part = 4/11

Probability of getting defective part 2nd time = 3/10

Total probability of getting defective part both the times = (4/11) (3/10)

= (12/110)

= (6/55)

The probability that both parts are defective is 6/55