Thursday

August 28, 2014

August 28, 2014

Posted by **jane** on Tuesday, September 18, 2012 at 11:17am.

1-how many teams of 4 horses be made if there were 9 horses in total ?

2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ?

3-in a math class , there are 24 students,the teacher picks 4 students to help do a demonstration.how many diffrent groups of 4 could she have chosen ?

- math -
**Reiny**, Tuesday, September 18, 2012 at 11:55am1. We can't tell from the question. If the position of a particular horse in the team is important, then it is a permutation. If you just care about groups of 4 horses, then you have a combination. I think the placement of a horse should be important

2. combination

3. combination, unless members of the group have specific tasks in the demonstration.

1. Permutation: 9x8x7x6 = P(9,4) = 3024

combination : C(9,4) = 126

2. 9!

3. C(24,4) = 10626

**Related Questions**

math - Decide if it's permuatation or combination . 1-how many teams of 4 horses...

maths - A & B together have 132 horses. If 0.25 of the no. of A 's horses = 0....

ps 361 - there are 16 horses. 8 chickens are white. 7 horses run away. how many ...

Math - In a competition, only the top 3 horses recieve prizes. How many possible...

math 3 - shane has won 24 baseball and,soccer trophies.the number of trophies he...

math - A farmer had a total of 22 men and horses living on it. There were a ...

Math - On joes farm there are 99 animals. There are four times as many cows as ...

Math - joe has a farm with 99 animal, four times as many cows as horses, twice ...

computer sciece(Computation Theory) - Find the error in the following proof that...

math please help - One day, a person went to horse racing area, Instead of ...