number+of+possible+arrangments+given+set

Martha is shopping for clothes. She wishes to buy an outfit consisting of a blouse, a skirt, and shoes. Blouses come in yellow, black, red, pink, white, blue, grey, orange, green, and turquoise. Skirts are available in red, tan, black, and grey. Shoes come in tan, black, brown, and grey. Martha does not like black clothes, but she might buy black shoes. How many different outfits does she have to choose from?

A. 144 B. 160 C. 108 D. 81

ANSWER: 10 blouse options - black = 9 4 skirt options - black = 3 4 shoe options

9 x 3 x 4 = 108