Different 37541

There are 15 boys and 20 girls in the brigade. How many different services can be specified if one girl and two boys are on the service?

Correct answer:

n =  2100

Step-by-step explanation:

C2(15)=(215)=2!(152)!15!=211514=105  n=20 (215)=20 105=2100

Did you find an error or inaccuracy? Feel free to write us. 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:

Related math problems and questions: