Sara has 6 necklaces, but her mother will only allow her to wear two at a time. How many different ways can Sara wear two necklaces?

A. 30
B. 15
C. 360
D. 12

2 answers

6C2 = (6*5)/(1*2) = 15
Sara has 6 necklaces, but her mother will only allow her to wear two at a time. How many different ways can Sara wear two necklaces?

A. 30
B. 15
C. 360
D. 12