Problem Solving Skills for Mathcounts Competitions

Book Store => Twenty Mock Mathcounts Sprint Round Practices => Bookstore => Twenty Mock Sprint Tests Solutions => Topic started by: yongcheng3315 on January 28, 2014, 07:36:27 PM

Title: Test 8 solutions
Post by: yongcheng3315 on January 28, 2014, 07:36:27 PM

Test 8 solutions

Title: Re: Test 8 solutions
Post by: ss5188 on February 05, 2014, 09:07:12 PM

There is a typo for #27. The correct answer should be 3, not 1.

Title: Re: Test 8 solutions
Post by: yongcheng3315 on February 05, 2014, 09:28:11 PM

Quote from: ss5188 on February 05, 2014, 09:07:12 PM

There is a typo for #27. The correct answer should be 3, not 1.

Is this better?  Thanks.


There are 4 balls labeled 1, 2, 3, and 4, respectively, in a box. Randomly take out two balls and the positive difference of the numbers on these two balls is x. What is the most possible value of x?

Title: Re: Test 8 solutions
Post by: ss5188 on February 05, 2014, 10:34:39 PM

I see what the question means now. The following will read even better:
"What is the most popular value of x?" Or
"What is the mode of all values of x?"