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Each week we'll be posting several questions from The Official Guide for GMAT® Review, 13th Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.
We'll be glad if you participate in development of this project: 1. Please provide your solutions to the questions; 2. Please vote for the best solutions by pressing Kudos button; 3. Please vote for the questions themselves by pressing Kudos button; 4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.
Believe ans is A as k can be 3,4,5 or 6. for all cases except k=6, sum of teo sides can be less than equal to third side which should not be true
As as per triangle property sum of two sides is greater than third side. _________________
If you found my contribution helpful, please click the +1 Kudos button on the left, Thanks
Re: If k is an integer and 2 < k < 7, for how many different [#permalink]
20 May 2014, 03:17
Relationship of the Sides of a Triangle: The length of any side of a triangle must be larger than the positive difference of the other two sides, but smaller than the sum of the other two sides.
Above relationship is in the core of this solution. Many times I have found students having difficulty is assimilating this concept.
Best way to get this concept is trying to actually draw triangles which contradict this. For example, try to draw a triangle with following sides (actual scale)
4, 3, 8
Once you failed, you will realize that The length of any side of a triangle must be larger than the positive difference of the other two sides, but smaller than the sum of the other two sides. _________________
Help me with Kudos if it helped you "
Mathematics is a thought process.
Re: If k is an integer and 2 < k < 7, for how many different
20 May 2014, 03:17