A wrong question in A/L Combined Maths paper | A/L සංයුක්ත ගණිතය ප්‍රශ්ණයක දෝෂයක්

There was a wrong question in the G.C.E Advance Level 2012 Combined maths paper. However W. M. N. J. Pushpakumara commissioner general examinations said, If this question is wrong, full marks of the question will be given to students.