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I need to find the probability in this word sentence. A bag contains three red marbles and seven blue marbles. You randomly pick a marble and then return it to the bag before picking another marble. Both and second marbles are red.

Respuesta :

we have

3 red marbles

7 blue marbles

then

[tex]\frac{3}{10}\times\frac{3}{10}=\frac{3\times3}{10\times10}=\frac{9}{100}[/tex]

answer: 9/100

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