Question

a box contain 19 balls bearing numbers from 1 to 19 . A ball is drawn at random from the box . find the probability that number on ball is (1). composite number. (2). divisible by 3 or 4. (3). divisible neither by 5 nor by 10. (4). an even number.​

Answer 1

Answer:

1. 1/19

2. 1/19

3. 16/19

4. 9/19