Difference between revisions of "1999 AMC 8 Problems/Problem 11"

(Created page with "Problem 11 Each of the five numbers 1, 4, 7, 10, and 13 is placed in one of the five squares so that the sum of the three numbers in the horizontal row equals the sum of the thr...")
 
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[asy]
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<math>[asy]
 
draw((0,0)--(3,0)--(3,1)--(0,1)--cycle);
 
draw((0,0)--(3,0)--(3,1)--(0,1)--cycle);
draw((1,-1)--(2,-1)--(2,2)--(1,2)--cycle);[/asy]
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draw((1,-1)--(2,-1)--(2,2)--(1,2)--cycle);[/asy]</math>
  
  
 
The answer is obviously (D) because you have to put the biggest number (13) in the middle. Then, in order to make it equal, you put the next biggest number (10) on the top, and then you put 7 on the left side. Since the difference for the numbers are all 3, you have to put the next biggest one (4) on the horizontal row, and then you put the (1) on the vertical row, and get letter (D) as your answer.
 
The answer is obviously (D) because you have to put the biggest number (13) in the middle. Then, in order to make it equal, you put the next biggest number (10) on the top, and then you put 7 on the left side. Since the difference for the numbers are all 3, you have to put the next biggest one (4) on the horizontal row, and then you put the (1) on the vertical row, and get letter (D) as your answer.

Revision as of 19:09, 21 July 2011

Problem 11

Each of the five numbers 1, 4, 7, 10, and 13 is placed in one of the five squares so that the sum of the three numbers in the horizontal row equals the sum of the three numbers in the vertical column. The largest possible value for the horizontal or vertical sum is


$[asy] draw((0,0)--(3,0)--(3,1)--(0,1)--cycle); draw((1,-1)--(2,-1)--(2,2)--(1,2)--cycle);[/asy]$ (Error compiling LaTeX. ! Missing $ inserted.)


The answer is obviously (D) because you have to put the biggest number (13) in the middle. Then, in order to make it equal, you put the next biggest number (10) on the top, and then you put 7 on the left side. Since the difference for the numbers are all 3, you have to put the next biggest one (4) on the horizontal row, and then you put the (1) on the vertical row, and get letter (D) as your answer.

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