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avatar+836 

The sequence of integers in each of the two rows of squares and in each of the two columns of squares form four separate arithmetic sequences. What is the least positive integer value for N?

 


 

 Dec 22, 2018

Best Answer 

 #1
avatar
+2

87
75, 68, 61, 54, 47, 40, 33, 26
63                           28
51                           16                  
39, 32,  25, 18, 11,  4

 

The rule is -12 as a common difference for "down"

The rule is -7 as a common difference for "across"

 Dec 22, 2018
edited by Guest  Dec 22, 2018
edited by Guest  Dec 22, 2018
 #1
avatar
+2
Best Answer

87
75, 68, 61, 54, 47, 40, 33, 26
63                           28
51                           16                  
39, 32,  25, 18, 11,  4

 

The rule is -12 as a common difference for "down"

The rule is -7 as a common difference for "across"

Guest Dec 22, 2018
edited by Guest  Dec 22, 2018
edited by Guest  Dec 22, 2018
 #2
avatar+836 
+2

Thank you so much! I understand it now!

ant101  Dec 22, 2018

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