A pizza shop offers 8 toppings. You want to choose exactly 3 different toppings for your pizza. How many possible topping combinations can you make?
A race has 6 runners. In how many different ways can the runners finish 1st, 2nd, and 3rd?
What is 120?
A restaurant offers the following limited lunch menu. Main Courses: Beef, Pork Roast, Duck, Quiche Vegetables: Peas, Squash, Cauliflower, Eggplant Beverages: Coffee, Tea, Milk Desserts: Cake, Pie, Sherbert. How many combinations of main course, vegetables, beverages, and desserts?
What is 144.
A student council must choose 4 representatives from a group of 10 students. How many different groups of representatives can be formed?
What is 210
A student creates a 4-digit lock code using the digits 1, 2, 3, 4, and 5 without repeating any digits. How many different lock codes are possible?
What is 120?
A teacher wants to randomly select 5 books from a shelf containing 12 different books. In how many ways can the books be chosen?
What is 792?
Seven books are placed on a shelf. In how many different ways can the books be arranged if two particular books must be next to each other?
What is 1440?
6! = 720.
Arrange the pair internally: 2! = 2
720(2) = 1440
A basketball coach needs to choose 2 captains and 3 assistant captains from 9 players, but all 5 roles are simply selections (order does not matter). How many possible groups of 5 leaders can be selected?
What is 126?
How many distinct arrangements can be made using all the letters in the word MATH?
What is 24?
(4! = 24)
A weather forecast states that the probability of rain tomorrow is 1/2. Which answer below correctly interprets this statement?
(A) The statement does not make sense because probabilities cannot be split equally between outcomes.
(B) The statement means there is an equal chance that it will rain or that it will not rain.
What is B.
A committee of 6 people must be formed from 15 volunteers, but two particular volunteers refuse to serve together. How many valid committees can be created?
What is 4719?
15C6 = 5005 (total) 13C4 = 286 (containing both specific volunteers).
Valid committees: 5005 - 286 = 4719
How many distinct arrangements can be made using all the letters in the word STATISTICS?
What is 50,400?
S appears 3 times, T appears 3 times, I appears 2 times, A and C each appear once.
10! /(3!3!2!) = 50,400