Question

Find 2 rational number between 1/2 and 1/3.

Answer 1

coming in to the sum the formula should be used a +b /2
so let
  a = 1/2 
  b = 1/3

so,
         1/2+1/3 /2
         
          2/5/2
 
          2/5 x2
  
          2/10
 
            ans is 1/5