2. In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is:
3. In a sample study of 640 people, it was found that 512 people have a high school certificate. If a person is selected at random, the probability that the person has a high school certificate is:
4. The probability that a number selected at random from the numbers 1, 2, 3, ..., 15 is a multiple of 4 is
6. A bag contains 16 cards bearing number 1, 2, 3 ...., 16 respectively. One card is drawn at random. What is the probability that a number is divisible by 3?