Question

An electronics store receives a shipment of 35 graphing calculators including 7 that are defective. eight calculators are chosen at random to be sent to a local high school. 8. how many total selections can be made?

Answer 1

There are 23535820 combinations that can be made of 35 calculators taken 8 at a time.

$_{35}C_8=\frac{35!}{8!27!}=23535820$