A science teacher chose a girl to pass out tests to the class. If there are 35 students in the class and the probability of choosing a girl is 4/7, how many girls are in the class?
What is 20?
100
Luis has a bag of 5 blue marbles and 2 yellow marbles. If he doesn't replace the marbles, what is P(2 blue marbles)?
What is 5/18?
100
Randall spins a spinner evenly divided into four sections numbered 1,2,3, and 4. If he spins it twice, what is the probability of getting a number that is less than 4?
What is 3/4?
100
Which statement comparing experimental and theoretical probabilities is true? A) The experimental probability of a family with 3 boys will always be equal to the theoretical probability of a family with 3 boys B)The experimental prob. of a family with 3 boys may be less than the theoretical probability of a family with 3 boys, or C) The experimental probability of a family with 3 boys will always be different from the theoretical prb. of a family with 3 boys
What is B) The experimental probability of a family with 3 boys may be less than the theoretical probability of a family with 3 boys
100
You have 8 flowers, each a different kind, and 3 different vases. How many outcomes are there for 1 flower in 1 vase?
What is 24?
200
Suppose Joe rolls a 6 sided number cube. If the probability of rolling a number less than 5 is 2/3, what is the best prediction of the number of times Joe will roll less than 5 if he rolls the cube 150 times?
What is 100?
200
Bob rolls a fair die and flips a fair coin, what is the probability he will land on an even number and heads?
What is 1/4?
200
If Sally has 5 pairs of pants, shirts colored red, green, blue, and pink, and shoes that are black or brown, how many outfits can she make?
What is 40?
200
You toss a number cube 360 times. How many times would you expect to get a number less than 4?
What is 180?
200
How many different ways can 4 books be arranged on a shelf?
What is 24?
300
At Frank's Furniture Store, the ratio of sales of living room furniture to bedroom furniture is 3 to 2. If 184 bedroom sets were sold last year, what is the best prediction for the number of living room sets sold last year?
What is 276?
300
The probability of choosing a red four from a deck of cards followed by a spade without replacement?
What is 1/102?
300
If I roll 2 fair number cubes, what is the probability I will get a product of more than 20?
What is 6/36 or 1/6?
300
If the weather report calls for a 20% chance of rain, this is the probability it will not rain?
What is 80%?
300
Five contestants enter the spelling bee. In how many different orders can they take their turn?
What is 120?
400
If someone guessing randomly on a true/false test, what is the probability of getting all 5 questions correct?
What is 1/32?
400
If you rolled 2 number cubes, what is the probability of rolling a 6 on one and an even number on the other?
What is 1/12?
400
Eli has 3 pairs of pants: blue, black and brown. He has 5 different colored shirts. How many possible outfits can Eli make?
What is 15?
400
Jon is playing a penny toss game. After tossing the penny 20 times, it landed on the plate 8 times. What is the experimental probability that it will land on the plate in the next toss? Give your answer as a percent.
What is 40%?
400
Six friends want to play a game but the game only allows four players. In how many ways can the friends play the game? (order matters)
What is 360?
500
The volleyball captains play rock, paper, scissors to see who will serve first. How many outcomes are possible? Is it fair?
What is 9 outcomes and yes it is fair- each person should win 3 times, and they will tie 3 times?
500
If you pick a number from 0-9 and then pick a different number, what is the probability of picking 3 and 5? (order matters)
What is 1/90?
500
The password for your computer must be a 3 digits followed by 2 letters. How many possible passwords are there?
What is 676,000?
500
Henri checked the number of seeds per grape in 40 grapes. He found a 60% chance that the grape would have 2 seeds. How many of the 40 grapes had 2 seeds?
What is 24 grapes?
500
Mrs. Wilber must choose 2 students in the class of 16 to pick up attendance. How many combinations of students are there?