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Re: In the diagram 14 nodes are represented by circles [#permalink]
05 Jan 2014, 19:18
This post received KUDOS
Please be so kind to explain the question and answers thanks in advance
let the circle between B and C be X ,so C is 2X,as it is the parent circle of the first one ,then the circle down from C is 4X ,left from which is 8X ,the nD is 16X . On the other hand,B is 2X,left from B is 4X ,then A is 8X . So D is double of A .