A locker has a combination lock that consists of three numbers, and each number in the combination has 10 options (the digits 0 to 9). How many different combinations can be made? (Use ONLY numbers in your answer, no other characters.)

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.