A purple bag contains 8 red marbles, 3 blue marbles and 4 green marbles. What is the probability Isai draws a red marble, does not replace it, and then draws another red marble?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

How do you solve a question like this?

Icould really use some with this question.