algebra
posted by denora .
A bag contains
9
marbles:
2
are green,
4
are red, and
3
are blue. Laura chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are blue? Write your answer as a fraction in simplest form.

3/9
This is equal to 1/3. 
well 3/9 for the first
but 2/8 for the second
1/3 * 1/4 = 1/12 
Oh! I am so sorry! I didn't read the question properly!! Sorry!

Happens all the time :)

A bag contains 9 marbles: 2 are green 5 red and 2 are blue . Ann chooses a marble at random and with out putting it back chooses another one at random. What is the probability that the first marble is green and the second is red ? Write your answers as a fraction in simpler form.

A bag contains 10
marbles:
5 are green,
2 are red, and
3 are blue. Laura chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are red? Write your answer as a fraction in simplest form. 
1/36
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