Problem 3 is incorrectly answered. I get it that we are assuming integers; however, the question specifically states two different numbers between 1 and 100. That statement rules out using numbers 1 and 100 !

Thanks for your comment. You’re right. I should have said “integers” in the problems statement instead of “numbers”. I should fix that. But I do specify the range as being between 1 and 100, inclusive. The term “inclusive” implies that 1 and 100 are included in the possible values of x and y. I noticed that the word “inclusive” wrapped around onto the next line in the problem statement, so I can see how you might have missed that. Thanks for bringing that to my attention. I’m not very happy with my explanation in the video solution, either, so I may re-record that too.

Challenge your mathematical problem solving skills with problems similar to those found on math contests such as the AMC 8, AMC 10, MATHCOUNTS, or the middle school math olympiads. I post a problem set each week, and then come back later in the week and post the answers and video solutions.

Problem 3 is incorrectly answered. I get it that we are assuming integers; however, the question specifically states two different numbers between 1 and 100. That statement rules out using numbers 1 and 100 !

Thanks for your comment. You’re right. I should have said “integers” in the problems statement instead of “numbers”. I should fix that. But I do specify the range as being between 1 and 100, inclusive. The term “inclusive” implies that 1 and 100 are included in the possible values of x and y. I noticed that the word “inclusive” wrapped around onto the next line in the problem statement, so I can see how you might have missed that. Thanks for bringing that to my attention. I’m not very happy with my explanation in the video solution, either, so I may re-record that too.