Missing Number Problem 51

FIND THE MISSING NUMBER IN THE BELOW NUMBER SEQUENCE APTITUDE PUZZLE

FIND MISSING NUMBER IN NUMBER SEQUENCE PUZZLE


                                                                     
ANSWER : 8

SOLUTION : 

In the above puzzle, sum of corner numbers and sum of middle numbers is equal to 34.
10 + 9 + 8 + 7 = 34 ;
15 + 5 + 6 + 8 = 34 ;

So, answer is 8.