Police use photographs of various facial features to identify suspects. one basic identification kit contains 75 hairlines, 38 eyes and eyebrows, 34 noses, 40 mouths, and 28 chins and cheeks.

a. find the total number of different faces that can be produced

b. a witness clearly remembers the eyes and eyebrows and the hairline of a suspect. because of this, there is only 1 choice for each of these features. given this information, find the number of different faces