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Mathematics 11 Online
OpenStudy (dls):

Okay is there a smart way to do a question like this?

OpenStudy (dls):

|dw:1360936333757:dw| counting the no. of triangles..duh

OpenStudy (dls):

using permutation and combination or something?

OpenStudy (shubhamsrg):

What can be better than counting!

OpenStudy (dls):

pnc will fail ? :/ why cant we apply that chapter!

OpenStudy (shubhamsrg):

Well it doesn't fail, simple counting is a part of PnC .

OpenStudy (dls):

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