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?

Blob
2 * 5 = 10

Reiny
Blob's answer is not correct.
This is like choosing 2 of 5, which is
C(5,2) = 5!/(3!2!) = 20 
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?

Anonymous
20

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

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

alsdfdfdca
mysis is bad
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