Wednesday
April 23, 2014

Homework Help: Maths

Posted by Ian on Monday, April 15, 2013 at 3:33am.

A bag contains 10 red marbles, 10 green marbles, 10 yellow marbles and 10 blue marbles. You reach into the bag and grab a marble, then reach into the bag and grab a second marble. The probability that the second marble is the same color as the first marble is ab, where a and b are positive, coprime integers. What is the value of a+b?

Note: You do not place the first marble back into the bag

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - A bag of marbles contains only green and red marbles. All of the marbles ...
Probability? - A bag contains 7 green marbles, 9 red marbles, 10 orange marbles...
math - A bag contains 5 green marbles, 3 yellow marbles and 2 red marbles. What ...
math - sally has a bag with red,blue, and green marbles. She has twice as many ...
Math - Say that a bag contains 100 marbles: 30 red, 30 blue, 30 green, plus a ...
Math - A bag contains 4 blue, 4 red, and 4 green marbles. Four marbles are drawn...
Math - A bag contains 4 blue, 4 red, and 4 green marbles. Four marbles are drawn...
10th grade - mary has a bag which contains 5 green marbles, 7 red marbles, and 9...
Stats - A bag contains 10 red and 8 green marbles. 5 marbles are selected ...
math-algebra - 7. A bag contains 5 red marbles, 6 green marbles, and 9 blue ...

Search
Members