Dear Freinds ,
Please give your valuable suggestion and the formula of below question.
Q1. A retrieval system retrieves a total of 50% documents, out of these 40 are irrelevant.Another 10 document which where relevant were not retrieved . The Precision percentage of that query would be ?
Ans.
A} 40%
B} 20%
C}60%
D} 80%
Given ans is :- B} 20%