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 10-15-2014 #1 MAS1   Join Date: Dec 2008 Posts: 249 A Negative Pattern? What is the value of x of the number pattern 25, 24, 23, ..., x if the sum of all the numbers in the pattern is -81?
10-15-2014   #2
zdolgos1922

Join Date: Oct 2014
Posts: 1

Quote:
 Originally Posted by mas1 what is the value of x of the number pattern 25, 24, 23, ..., x if the sum of all the numbers in the pattern is -81?
22

10-16-2014   #3
Dark88Dragon

Join Date: Aug 2013
Posts: 20

Quote:
 Originally Posted by MAS1 What is the value of x of the number pattern 25, 24, 23, ..., x if the sum of all the numbers in the pattern is -81?
If I got this question right I would say x = -28.

Because the row {25,24,...,-24,-25} equals 0;

If you continue this pattern then you will get 0 = 81 - (26+27+28);

A lot of ways lead to rome but I prefer going with the easiest solution. If you would like to build an algorithm this would maybe not be the most efficient way ^^

10-25-2014   #4
MAS1

Join Date: Dec 2008
Posts: 249
Correct!

Quote:
 Originally Posted by Dark88Dragon If I got this question right I would say x = -28. Because the row {25,24,...,-24,-25} equals 0; If you continue this pattern then you will get 0 = 81 - (26+27+28); A lot of ways lead to rome but I prefer going with the easiest solution. If you would like to build an algorithm this would maybe not be the most efficient way ^^
You are correct!

 05-20-2015 #5 eliseo   Join Date: May 2015 Posts: 5 -28

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