Non Verbal Reasoning - Analytical Reasoning - Discussion

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

Find the number of triangles in the given figure.

18
20
24
27
Answer: Option
Explanation:

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.

Discussion:
29 comments Page 1 of 3.

Mukesh vaishnav said:   7 years ago
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.

KISHAN said:   9 years ago
Answer is 24.

AHB, AOH, AOB.
FED, EQF, EQD.
NIJ, NOI, IOJ.
LMK, MQL, LQK,
HNG, JBC, CDK, GFM,
GIL, GPI, GPL,
CIL, CPI, CPL,
IPC, GPI.

Wasim Murtaza said:   8 years ago
@Ravi.

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

Parvatheesam said:   1 decade ago
Yes. Finding out the number of triangles is a difficult task it seems. Can anyone explain the any easy way to count.

Sharmila said:   3 years ago
@Swathi.

Here total no Of nodes are 17. But you had mentioned 14 can you please explain me how?
(1)

Swathi said:   6 years ago
@All.

The shortcut method is;

Total no.of nodes + 2(no.of inner nodes).
=14 + 2 (5),
=24.
(1)

Azhar said:   1 decade ago
Can anyone help regarding more easier and quick way to solve this type of problems.

Rohit Bhatia said:   1 decade ago
I use formula no.of node.

17+2(9) = 35.

But this answer not shown in option.

Vivek said:   9 years ago
Please tell me the main formula to define the triangle in any stream.

Vilas said:   1 decade ago
Can anyone tell the formula for finding out the number of triangles?


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