What combination of transformations is shown below?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be