Question

Two items are chosen at random from a 12 items of which 4 are defective. A be the event that both items chosen are defective. A be the event that both items chosen are defective.What is P(A)?

Answer 1

Answer:

1/11 i.e. 9.09%

Step-by-step explanation:

Since 4 out of 12 items are defective, then

• Probability of picking 1st item as defective is 4/12
• Probability of picking the second item as defective is 3/11
• Thus, probability of picking both items as defective is 4/12 * 3/11 = 1/11 = 9.09%