An electronics store receives a shipment of 20 graphing calculators, including 7 that are defective. Four of the calculators are selected to be sent to a local high school.

A) How many selection can be made using the original shipment?

B) How many of these selections will contain no defective calculators?

**Solution:-**

A) How many selection can be made using the original shipment?

4845

B) How many of these selections will contain no defective calculators?

715