Multiple choice question?

Question

Shane is ordering a new custom bicycle. He has 5 different choices for the seat cushion, 6 different choices for the rims, and 3 different choices for the handlebars, as well as 10 different choices for the paint color. If Shane makes one selection from each category, how many different bike configurations are possible?

A. 24 B. 900

C. 90 D. 140

Answer 1

5x6x3x10=900

so B

Answer 2

B

XcY = X! / Y! * (X-Y)!

5c1 * 6c1 * 3c1 * 10c1 = 5*6*3*10 = 900

Answer 3

B. 900

5 x 6 x 3 x 10 = 900