Simple Pobability

A dartboard has 20 equal sections, of which 10 are black and the rest are white. What is the probability that a dart will land in a black section?

A female student showed his teacher a picture of 7 guys and asked who her crush is from the picture. Since the teacher is impartial, he picks randomly. What is the probability that he'll guess it right?

If one letter is chosen at random from the word TRUSTWORTHY, what is the probability that the letter chosen is a consonant?

Kyle works at a local music store. The store just received a shipment of new CDs. In the shipment, there were 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs. What is the probability that the first CD Kyle chooses from the box will be country?

A cooler contains 12 bottles of apple juice and 18 bottles of orange juice. You reach into the cooler without looking and pull out one bottle, What is the probability that the bottle is an apple juice?

You draw a card at random from a deck that contains 222 black cards and 777 red cards. What is P(draw a black)

Ear Darenz is asked to choose a day from a week. What is the probability of choosing a day which starts with S?

There are 90 students in the seventh grade. Fifty-two of those students are girls. If one student will be chosen at random to read the morning announcements for the week, what is the probability that the student is a boy?

The store ”T-Shirt Laboratory” sells shirts in sizes S, M, L and XL. Each size comes in four different colors blue, yellow, white and red. The shirts are either long sleeves or short sleeves. What is the probability the customer chooses a yellow shirt?

The brothers Ken and Martin are going to decide by a coin flip wherein the loser gets to wash the dishes. Martin says “Heads I win; tails you lose,” and Ken agrees. What is the probability that Ken will wash the dishes?