Question

If C = {900, 901, 902, . . . , 999} and D = {U.S. state capitals}, what is |C × D|?
|C × D| =

Answer 1

500

Explanation:

|C×D| = |C| × |D|

|C| = 10

|D| = 50

|C×D| = 10×50 = 500