I have a couple questions regarding, well, a couple questions.

1.) A jar contains four coins: a nickel, a dime, a quarter, and a half-dollar. Three coins are randomly selected from the jar.

(a) List the simple events inS. (UseN for nickel,(b) What is the probability that the selection will contain the half-dollar? (Enter an exact number as an integer, fraction, or decimal.)D for dime,Q for quarter, andH for half-dollar.)

(c) What is the probability that the total amount drawn will equal 55¢ or more? (Enter an exact number as an integer, fraction, or decimal.)

okay, forgive me if this is a dumb question, but with a question like this, does order matter? For instance, would NDQ be different than QDN?

also,

2.) A student prepares for an exam by studying a list of 10 problems. She can solve 3 of them. For the exam, the instructor selects 2 questions at random from the list of 10. What is the probability that the student can solve all 2 problems on the exam? (Enter an exact number as an integer, fraction, or decimal.)

My answer is 0.0333. With my teacher, I only get three chances to get the answer correct, so I just wanted to see if this was correct.

Thank you in advance