A box contains tiles with the letters A,B,C,D and E Pedro chooses a tile at random writes down the letter and puts the tile back in the box

Question

He repeats this 40 times 

a= 12 b=8 c=9 d=5 e=6

 estimate the probability of choosing an e tile write answer as a decimal

Answer 1

The best guess you have for the future probability of drawing the E tile is the percent of the time you've already drawn it. Pedro has drawn and E 6 times out of 40 draws, so

P(E) = 6/40