# Math

posted by Eric

Ann, Mara, Jenny, Tina, and Sue are sisters. Two of the five sisters must help their father at this business each Saturday. How many combinations of two sisters are possible?

1. Blob

2 * 5 = 10

2. Reiny

This is like choosing 2 of 5, which is

C(5,2) = 5!/(3!2!) = 20

3. Kyle

Ann, Mara, Jenny, Tina, and Sue are sisters. Two of the five sisters must help their father at his business each Saturday. How Many Combinations of two sisters are possible?

4. Anonymous

20

5. Zainab

5 sisters to fill 2 spots so 4. 5*4=20 then 20/2= 10

6. Sinai

Five sisters times four name pairs for each girl, gives you twenty name combinations. 5×4= 20

7. alsdfdfdca

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