Puzzle in Mathematics with Answer

This is a puzzle in mathematics which will require your mathematical and logical skills. In this maths puzzle, you are shown some numbers in the Circle. These numbers are in some mathematical or logical sequence to each other. Your challenge is to find the hidden relationship among given numbers in the Circle and then find the value of the missing number which will replace the question mark.

Can you solve this Puzzle in Mathematics?

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

The Answer is 19.
The difference between the opposite segments of the Circle is 6 and 4 alternatively. 
Answer 27 is avoided as this number is already present in the Circle.

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