exam Maths Puzzle Numerical Ability

I just had a question

Is it true that when constructing the median of a triangle, it is possible that the median may lie exterior to the triangle?

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exam Other Question

Need to come up with an answer of either 21 or 45.

3^2 / 1/3 + 3 x 6 = ?
I am not sure how to answer this homework problem. It is an online math class, I am not sure of its origins.
-2x+4>12