Latest TCS Aptitude Question SOLUTION: The figure below shows a “size 3” equilateral triangle divided up into 9 “size 1 “equilateral triangles. The figure has 6 upward facing and 3 downward facing “size1”eq

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The figure below shows a “size 3” equilateral triangle divided up into 9
“size 1 “equilateral triangles. The figure has 6 upward facing and 3 downward facing “size1”equilateral triangles, 3 upward facing and no downward facing
“size 3 “ triangle. It has a total of 13 equilateral triangles of all sizes.



The following size 6 triangle is divided up in the same way. What is the sum of the number of up facing size 2 triangles and the number of upward facing size 4 triangles?

Asked In TCS Bharanidharan.S (8 years ago)

Unsolved Read Solution (4)

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Read Solution (4) :

vandana singh  (8 years ago)

up facing size 2 triangles = 15
up facing size 4 triangles = 6
sum=21

Is this solution Helpfull? Yes (6) | No (4)  

Surya manasa  (8 years ago)

a)27 b)17 c)18 d)19 there is no 21 in option ,,, plz tel correct answer

Is this solution Helpfull? Yes (1) | No   

kamalteja  (7 years ago)

there is no option as 21....so,please tell the correct ans..

Is this solution Helpfull? Yes | No (1)  

Kruthiga.K  (7 years ago)

Solution : 18
Size 3 is divided into 6 upward facing size1 triangle and as it has 13 equilateral triangle it is obvious that there are 3 size to triangle in it
Thus in size 6 triangle there are 6 size 4 triangle

size 3 triangle has 6 (i.e.,3*2) size1 upward facing triangle
thus size 6 triangle has 6*2=12 size 2 triangle

Therefore 6+12=18.

Is this solution Helpfull? Yes | No (2)  

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