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sanket singh

· started a discussion

· 1 Months ago

wrong counting (Question: 190147.0 )

sir please check 8 and 9 are not triangles so we cannot count them.

Question:

How many triangles are there in the given figure ?


Options:
A) 17
B) 21
C) 25
D) More than 25
Solution:
Ans: (c) 


There are 25 triangles in the given figure – (1 – 11 except 8 and 9), (2, 3), (3, 4), 

(4, 5), (6, 7), (2, 5), (10, 11), (9, 10), (8,11),  (1, 2, 5), (6, 9, 10), (7, 8, 11), 

(2, 5, 6), (4, 5, 6, 7 ), (2, 5, 6, 7), 

(8, 9, 10, 11) and (2, 3, 4, 5, 6, 7) 

Knowledge Expert

· commented

· 1 Months ago

We resolved it......

Knowledge Expert

· commented

· 1 Months ago

yes, There are 25 triangles in the given figure – (1 – 11 except 8 and 9), (2, 3), (3, 4),
(4, 5), (6, 7), (2, 5), (10, 11), (9, 10), (8,11), (1, 2, 5), (6, 9, 10), (7, 8, 11),
(2, 5, 6), (4, 5, 6, 7 ), (2, 5, 6, 7),
(8, 9, 10, 11) and (2, 3, 4, 5, 6, 7)
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