Triangle Math Puzzle to Twist your Brain

This is Triangle Math Puzzle which will twist your brain. In this Triangle Math Brain Twisting Puzzle, you are given some number in and around Triangles. Your challenge is to find the logical or mathematical relationship among the given numbers and then find the missing number which replaces the question mark in the last triangle.

What Number will replace Question Mark?

The answer to this "Triangle Math Puzzle", can be viewed by clicking on the answer button.

The Answer is 1
The logic used in this Triangle Math Puzzle is as below
D = (A+B)xC
where D is the central number and A, B, C are the numbers around the triangle in an anti-clockwise direction starting from the top of the triangle.

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