Please explain how you got your answers! (: Solve the problem by using the counting principle.
A. Drapery is sold in 4 different fabrics. Each fabric comes in 13 different patterns. Each pattern is offered in 9 different colors. How many fabric-pattern-color combinations are there?
B. A shelf hold 3 novels, 2 biographies, and 1 history book. Two students in turn choose a book at random. What is the probability that the student choose the following?
both novels
A. 1/4
B. 1/2
C. 1/5
D. 1/3
A shelf hold 3 novels, 2 biographies, and 1 history book. Two students in turn choose a book at random. What is the probability that the student choose the following?
both biographies
A. 1/15
B. 1/20
C. 1/5
D. 1/3
A shelf hold 3 novels, 2 biographies, and 1 history book. Two students in turn choose a book at random. What is the probability that the student choose the following?
a history, then a novel
A. 1/2
B. 1/5
C. 1/10
D. 1/15
