Can you also solve

Find the number which fits into the last blue triangle (replace the red question mark with the correct number). Look at the numbers in the corners of the triangles - they give you hint how to solve this puzzle.

**what number fits into the last triangle**Find the number which fits into the last blue triangle (replace the red question mark with the correct number). Look at the numbers in the corners of the triangles - they give you hint how to solve this puzzle.