There are 15 exercise bikes in a fitness store showroom. The fitness store owner wishes to select three of them to display at a fitness expo. How many ways can a group of three be selected

455

Step-by-step explanation:

Given: There are 15 exercise bikes in a fitness store showroom.

To select 3 of them we will use " combinations".

The number of combinations of selecting r things out of n is given by :-

So, the number of combinations of selecting 3 bikes out of 15 =

Hence, the number of ways a group of three be selected = 455

you answer is a

step-by-step explanation:

cut 138 centimeters off

step-by-step explanation:

250-112 = 138