Basic Probability
Maria is rolling a normal 6 sided dice. The probability of rolling a 2
1/6
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaced. A second marble is then taken out. What is the probability both marbles that were taken out are red?
1/5 or 6/30 or 2/10
You are trying to decide what to wear to school. You know you have a green pair of pants, a red pair, and a blue pair. You also have a brown shirt, a plaid shirt, and a yellow shirt. How many different outfit combinations can you make?
9
Rolling a 6 sided dice and spinning a spinner with 5 equal sections labeled A-E, the probability of rolling an 5 and spinning an A is
1/30
How likely is it that a coin is flipped and lands on tails?
Equally likely
The classic wood carousel at Carousel Park in Hampton, VA has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse?
2/3 or 32/48
You are choosing two tiles from tiles numbered 1-7 without replacement. What is the probability that you select a 5 then a number less than 4?
3/42 or 1/14
What is the number of possible outcomes for spinning one spinner with 8 equal sections and another spinner with 6 equal sections?
48 possible outcomes
You roll a 6 sided dice and flip a coin. The probability of rolling an even number and flipping a heads is
1/4
How likely is it that a number cube is tossed and lands on 3?
Unlikely
What is the probability of rolling an odd number on a normal 6 sided dice?
3/6 or 1/2
A basket contains five apples and seven peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. The probability that the first piece of fruit is an apple and the second piece is a peach is
35/132
Amiya and Keyshawn are candidates for class president of the 7th grade. Ajaye, Chishon, and Laura are candidates for vice president. How many winning combinations are possible?
6
You roll a 6 sided dice twice. What is the probability of rolling an even number and then a 4?
3/36 or 1/12
How likely is it that a number cube is tossed and it lands on 8?
Impossible
You have 3 red shirts, 2 blue shirts, 4 green shirts and 6 black shirts. The probability that you select a shirt that isn't red is
12/15 or 4/5
Twelve people work together: four of them are managers and eight of them are office workers. Two people are chosen at random from the twelve members of the group for a survey Calculate the probability that one is a manager and one is an office worker.
32/132 or 8/33
Ms. French is packing for a trip. She packs a white blouse, a pink blouse, a blue blouse, and a green blouse. She also packs a black suit, a navy blue suit, and a gray suit. What is the probability that the first outfit she wears is the gray suit with a pink blouse?
1 out of 12
You have a bag containing 4 blue marbles, 2 yellow marbles, 3 red marbles and a green marble.You pick a marble, record its color and then put it back and pick a second marble. What is the probability you select a red marble and then a yellow marble?
6/100 or 3/50
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain
Jarvonya spins a spinner with 5 equal sections with the letters A-E. What is the probability she will spin a a vowel?
2/5
You randomly draw a marble from a bag containing 2 red marbles and 5 green marbles. You keep the marble and then draw a second marble. The probability that the first draw is Green and that the second draw is Red is.
10/42 or 5/21
You are trying to make an ice cream cone. You have 4 options for types of cone. You have 5 flavors to choose from and you have 10 different toppings to choose from. The number of possible ice cream cones you can make is
You rolling an 8 sided dice and spun a spinner with 5 equal sides labeled A-E. The probability of rolling an odd number and spinning a vowel is
8/40 or 1/5
How likely is it that a number cube lands on 2 and a coin lands on heads?
unlikely