Question

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?

Answer 1

2 * 5 = 10

Answer 2

Blob's answer is not correct.

This is like choosing 2 of 5, which is

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

Answer 3

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

Answer 4

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

Answer 5

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?

Answer 6

20

Answer 7

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

Answer 8

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

Answer 9

mysis is bad

Answer 10

Is 20