<h2>96%-will-fail-to-answer-this</h2>

 Hard math reasoning puzzle

96% + will fail to answer this

If

23=31

43=52

56=16

67=58

Then

85=?

 These questions are given a set of equations related to 

a specific rule so that each equation holds

 You need to find out the pattern used so that the equations are true
 Once you find the pattern that the equations follow, then you find the missing number.

 You can see the answer and explanation below

Answer  The pattern is:If the number is AB: AB=A^2+B^2 AND invert the result 23=2^2+3^2=4+9=13 invert =31 43=4^2+3^2=16+9=25 invert 52 So 85=8^2+5^2=64+25=89 invert 98 Answer is 98

 

For more Practice Math Reasoning 

Missing number puzzles