The Brainliest Answer!

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Dimension less quantity

      =  plane angle          units  degrees or  radians.  symbol  °
     = solid angle              units steradians  symbol   symbol  sr
unit less quantity  ---  but dimension  exists for that quantity.

     I wonder if there is a quantity like that.  If there is a dimension, that means there is a unit and there is a way of measuring that.  That means there is no such quantity without a unit but with a dimension .

2 5 2