Which Number Is Missing from the Final Triangle?

This Puzzle Video will test your logical reasoning skills. In each of these logic puzzles, there are three different sets of triangles. Each triangle contains some numbers inside and outside the triangle. These numbers relate to each other with some logical and mathematical pattern. Your challenge in each of these Triangle Puzzles is crack the code which relates these numbers. Once you are able to crack the code, find out which number is missing from the final triangle? Write down your answer to the last bonus triangle puzzle in comments.

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