Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300300300 times, putting the marble back in the bag after each draw.

4 answers

Prediction: Her arm will be too tired to complete all of these draws.
Totally silly question!

Assuming she can do about 10 draws a minute, needing time to record each event,

time needed to complete your task
= 300300300/10 or 30030030 minutes
= 500500.5 hrs
= appr 20854 days
= appr 57 years

btw, was there a question in your post?
It is 120 because 300 times 2/5 is 120
The probability isnt just about fractions. According to my sense, it would be NOT exactly 120 times.