A) 28
B) 20
C) 23
D) 26
Correct Answer: C
Solution :
: Number of triangles In \[\Delta ABC=({{T}_{1}},{{T}_{2}}{{T}_{3}},{{T}_{4}}{{T}_{5}}{{T}_{6}}{{T}_{7}}{{T}_{6}}{{T}_{7}},({{T}_{1}}{{T}_{2}}{{T}_{3}}{{T}_{4}}{{T}_{5}}{{T}_{6}}{{T}_{7}}))=9\]You need to login to perform this action.
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