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23-01-2022
Mathematics

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There is a bag filled with 4 blue and 5 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting 2 blues?

Respuesta :

maci0000 maci0000

23-01-2022

7 out of 9 , 7:9, 7/9

because 4+5=9
9-2= 7

Answer Link

14802278 14802278

23-01-2022

Answer:

8/18

Step-by-step explanation:

the probability of the marble being red is 5/9 and it being blue is 4/9

so the probability of it being a blue marble two times is

4/9 + 4/9

=

8/18

Answer Link

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