Fountain work possibilities

There are seven fountains in the city. Only five always work. How many possibilities do five fountains work at the same time?

Final Answer:

n =  21

Step-by-step explanation:

C5(7)=(57)=5!(75)!7!=2176=21  n=(57)=21



Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
Would you like to compute the count of combinations?

You need to know the following knowledge to solve this word math problem:

combinatoricsGrade of the word problem

Related math problems and questions: