Math 7th Grade
posted by Adnan .
A bag contains 5 red,2 blue,and 4 white marbles. What is the probabiltiy If Sam picked a red marble replaced it and picked a white marble?

Math 7th Grade 
Ms. Sue
4/11 for the white marble

Math 7th Grade 
Adnan
how?

Math 7th Grade 
Ms. Sue
11 marbles are in the bag, and 4 are white.
http://www.mathsisfun.com/data/probability.html 
Math 7th Grade 
Adnan
but the red marble is replaced

Math 7th Grade 
Ms. Sue
That means that the red marble is back in the bag.

Math 7th Grade 
Adnan
no it doesnt
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