Maths Puzzles With Answers #52

Maths Puzzles With Answers #52

Solution: 

Answer is 3527

Explanation:

In the others the sum of the first two numbers is equal to the sum of the second two numbers.

       for example 

                         9678 = 9+6 = 7+8

                         4572 = 4+5 = 7+2 

                         5261  = 5+2 = 6+1 

                         5133 = 5+1 = 3+3 

                         3257 = 3 + 2 != 5+7

                         6895 = 6+8 = 9+5

                         7768 = 7+7 = 6+8