Non Verbal Reasoning - Analytical Reasoning - Discussion

Discussion :: Analytical Reasoning - Section 1 (Q.No.5)


Find the number of triangles in the given figure.

[A]. 18
[B]. 20
[C]. 24
[D]. 27

Answer: Option C


The figure may be labelled as shown.

The simplest triangles are IJO, BCJ, CDK, KQL, MLQ, GFM, GHN and NIO i.e. 8 in number.

The triangles composed of two components each are ABO, AHO, NIJ, IGP, ICP, DEQ, FEQ, KLM, LCP and LGP i.e.10 in number.

The triangles composed of four components each are HAB, DEF, LGI, GIC, ICL and GLC i.e. 6 in number.

Total number of triangles in the figure = 8 + 10 + 6 = 24.

M.ramanan said: (Oct 27, 2011)  
Its like very difficult, can anyone answer briefly and clearly ?

Parvatheesam said: (Apr 20, 2012)  
Yes. Finding out the number of triangles is a difficult task it seems. Can anyone explain the any easy way to count.

Romeo said: (Jun 14, 2012)  
Can anyone explain easy way or formula to find the no of triangles ?

Meera said: (Jul 14, 2012)  
The drawing figure is very difficult.

Bakki said: (Aug 1, 2013)  
Is there any formula to find out the answer?

Azhar said: (Aug 4, 2013)  
Can anyone help regarding more easier and quick way to solve this type of problems.

Jaya said: (Feb 17, 2014)  
Count no of triangles by making the figure half and then double it.

Shantanu Vats said: (Mar 6, 2014)  
Need a simple method to counts triangle or square.

Vilas said: (Mar 7, 2014)  
Can anyone tell the formula for finding out the number of triangles?

Rohit Bhatia said: (Aug 14, 2014)  
I use formula no.of node.

17+2(9) = 35.

But this answer not shown in option.

KISHAN said: (May 11, 2015)  
Answer is 24.


Vivek said: (Jun 15, 2015)  
Please tell me the main formula to define the triangle in any stream.

Keerthi said: (Sep 30, 2015)  
Can anyone tell the correct trick?

Vasu said: (Feb 20, 2016)  
How to count easily explain please?

Karthik said: (Aug 21, 2016)  
Is there any Formula for finding it easily?

RAVI said: (Aug 30, 2016)  
Is there any shortcut method to solve the triangle problem?

Wasim Murtaza said: (Dec 17, 2016)  

There is no short cut method, so Count first those triangles having no segment then those have one segment then next.

Meenakshi Regar said: (Jan 12, 2017)  
Please tell me the shortcut method to find the solution in exams.

Saloni said: (Jan 6, 2018)  
Can anyone explain it in a simple way?

Siddharth said: (Jan 27, 2018)  
How to find no of nodes?

Mukesh Vaishnav said: (Feb 12, 2018)  
It has 25 triangles.

Ans- middle square has =8 triangles by twice method( count all triangles and then last part *2) then you see three same types of triangles at first, second and at last which has 3 - 3 - 3 equal triangles =9, and at last small and simple triangles are 8 (at sides and middles). So that's all answer is 25.

Swathi said: (Jan 2, 2019)  

The shortcut method is;

Total no.of nodes + 2(no.of inner nodes).
=14 + 2 (5),

Girl said: (Sep 30, 2019)  
Any easy method, please?

Ram said: (Feb 29, 2020)  
26 is the correct answer.

Lakshmialekhya said: (Jan 11, 2021)  
How the inner nodes are calculated? Please explain to me.

Lahari said: (May 2, 2021)  
How the inner nodes calculated? Please explain.

Sharmila said: (Nov 23, 2021)  

Here total no Of nodes are 17. But you had mentioned 14 can you please explain me how?

Dinesh Kumar Shahi said: (Jan 7, 2022)  
Good, thanks all for explaianing.

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