document.write( "Question 1109303: A list of 11 positive integers has a mean of 10, a median of 9, and a unique mode of 8. What is the largest possible value of an integer in the list? \n" ); document.write( "
| Algebra.Com's Answer #724336 by greenestamps(13209)     You can put this solution on YOUR website! \n" ); document.write( "In a set of 11 positive integers, the 6th one is the median, which is 9: \n" ); document.write( "x, x, x, x, x, 9, x, x, x, x, x \n" ); document.write( "The unique mode is 8; let's use only two 8's and see what the largest integer in the set can be: \n" ); document.write( "x, x, x, 8, 8, 9, x, x, x, x, x \n" ); document.write( "The mean is 10, so the sum of all 11 numbers is 110. We are trying to find the largest possible value for a number in the set; that means we want all the other numbers to be as small as possible. Since 8 is the unique mode and we are trying to use only two of them, the other numbers must all be different; for the sum of all 11 numbers to be 110, we get this: \n" ); document.write( "1, 2, 3, 8, 8, 9, 10, 11, 12, 13, 33 \n" ); document.write( "Now let's use three 8's; that will allow us to use some smaller numbers twice, making it possible that we might get a larger number than 33 in the set. Using the smallest possible numbers, keeping our median of 9 and unique mode of 8, now using three 8s, we get this: \n" ); document.write( "1, 1, 8, 8, 8, 9, 9, 10, 10, 11, 35 \n" ); document.write( "Yes, using three 8's for the unique mode, we were able to get 35 for the largest number in the set. \n" ); document.write( "What about four 8's for the unique mode? Using the same logic, we get this: \n" ); document.write( "1, 8, 8, 8, 8, 9, 9, 9, 10, 10, 30. \n" ); document.write( "With the fourth 8, the largest number we can get in the set is 30. \n" ); document.write( "So the final answer is... \n" ); document.write( "The largest possible number in the set is 35. \n" ); document.write( " |