Find the letter

This picture contains letters corresponding to numbers.
eg. a-1,b-2 like that.
Each convex object correspond to a distinct integer.
At the overlapping region some operation happens between the integers.
This problem uses modular arithmetic.
Find the letter at "?" .Click here for solution.


  1. solutions will be posted one day after the publication of each puzle.

  2. problem updated
    a bug was fixed

  3. thanks.. worked perfectly for me.


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