Ajar contains 6 chocolate chip cookies and 9 peanut butter cookies. richard grabs 3 cookies at random to pack in his lunch. what is the probability that he drew 3 chocolate chip cookies?

a. 3/455
b. 4/91
c. 1/18
d. 1/2

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before