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?

Question

Blob · Accepted Answer

2 * 5 = 10

Reiny · Answer

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

Kyle · Answer

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 · Answer

20

Zainab · Answer

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

Sinai · Answer

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

alsdfdfdca · Answer

mysis is bad

Emy · Answer

Is 20

Paul. · Answer

10. Keep in mind order doesn't matter so half of 20.

Denis Palacios · Answer

12 combinations Ann Mara Ann Sue Mara Jenny Mara Tina Mara Sue Jenny Ann Jenny Tina Jenny Sue Tina Ann Tina Sue Sue Ann Sue Tina