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Find out the number of triangles in the ...

Find out the number of triangles in the given pattern.

A

23

B

26

C

27

D

29

Text Solution

Verified by Experts

The correct Answer is:
A
Number of triangles of unit length
`=1+3+5+7`
`=16`
Number of triangles of length 2 units
`=1+2+3=6`
Total number of triangles of length 2 units
`=6+1=7`
Number of triangles of length 3 units
`=1+2=3`
Number of triangles of Length 4 units = 1
Total number of triangles
`=12+7+3+1=23`
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