Unit 6/Probability of Simple Events

If you roll two dice, what is the probability that the sum of the two is odd?

1/2 or 50%

In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

1/3

A spinner has 4 equal places, that are colored yellow, blue, green and red. What are the chances of landing on blue?

1/4

A jar contains 4 blue marbles, 5 red marbles and 11 white marbles. If a marble is drawn from the jar at random, what is the probability that the marble is red?

1/4 or .25 or 25%.

A die is rolled and a coin is tossed, what is the probability that the die lands on a odd number and the coin shows a head?

1/4 or 25%

Two coins are tossed, what is the probability that both times they were heads?

1/4 or 25%

What is the probability of getting a sum 9 from two throws of a dice?

1/9

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

10/21

Two cards are drawn randomly from a deck of cards. What is the probability that both cards are clubs?

12/204 or 1/17 or 5.8%.

What is the probability of choosing a day that falls on the weekend when randomly picking a day of the week?

2/7 or .285 or 28.5%.

If you draw a card from a standard deck of cards, what is the probability of drawing a card that has a face on it?

3/13 or 23.1%

If you draw a card from a standard deck of cards, what is the probability of not drawing a spade?

3/4 or 75%

There are 5 marbles in a bag, 4 are blue, and 1 is red. What is the probability that you pick a blue marble?

4/5

Three coins are tossed. What is the probability of getting at most two heads?

7/8

A card is drawn at random from a deck of cards. What is the probability of getting a queen?

1 / 13

A card is drawn at random from a deck of cards. What is the probability of getting the 3 of diamond?

1 / 52 or 1.92%

What are the chances of rolling a 4 on a die?

1/16

A die is rolled, what is the probability that an even number is rolled?

1/2 or 50%

A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that the marble is white?

1/2 or 50%

What is the probability of rolling two fives on a six-sided die?

1/36 or .027 or 2.7%.