Question

A lot of 42 books contains 12 defective books. If one book is drawn at
random from the lot, the probability of getting a non defective book is
2/7 , 5/7 , 15/21 , 0

Answer 1

Answer:

5/7

Step-by-step explanation:

total number of books - 42

number of defective books - 12

therefore number of non defective books - 42-12=30

P(getting a non defective book) = 30/42 = 5/7

hope it helps :)