1205 is what i think....n ofcourse i also think my answer is wrong[3]
The sides AB , BC and CA of triangle ABC hav 3 , 4 and 5 interior pts. respectively on them. The no. of triangles that can be constructed using these interior pts. as vertices is??
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8 Answers
6miracle!!!!!
kunl
its the rite ans:P
ab can u xplain a little abt this wonderful turnaround!!
:)
6the doubts i had were that the 1st the quesn is a bit confusing
interior pts on the sides
and then
nothin has been said abt the coliinearity of these pts!!
30The solution is pretty simple - 12C3 - 3C3 - 4C3 - 5C3 .
The question says that the points are on the sides .
So we choose any three points arbitrarily, and then remove those cases where all the points are from the same side.
30I think they tried to over-justify it and ended up doing the opposite. [3]