Wrong count in detail level

Hi,

we are getting wrong count in below scenario can any one please share ideas on this.

emp no  emp name  emp type

101       AAA               P

102       bbbb               Q

101       AAA              P

103       ccc               R

104       ddd                P

105       eeee               Q

106        ffff                  R

102        bbbb              Q

103        ccc                R

we need  emp count wise  and need to remove duplicates while counting .

ex :  emp type

           P (count)  is  2

            Q count is    2

            R count is  2

here in count we need not  consider duplicates .

Thanks.