Three rock bands and three rap groups are performing a show. What is the probability that a rock band will perform both first and​ last?

A class consists of 18 boys and 16 girls. The teacher will randomly choose three students to be on a special committee. What is the probability that more girls are on the committee than boys?

Jason flips a coin and it lands on head.  He flips the coin again.  What is the probability that it will land on heads?

you pick three cards from a deck replacing the card each time before picking the next card. What is the probability that all three cards are jacks?

A man drops 10 black stones and 30 white stones into a bag. what is the probability that a stone drawn out of the bag is a white stone

A bag contains eight balls: 3 red, 3 green, and 2 blue. You sample three balls without replacement. What is the probability that you get a red ball, then a green ball, then a blue ball?