A bag contains 2 red marbles, 6 blue marbles and 7 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 100oth, that both marbles drawn will be red?​

Respuesta :

Answer:

0.01 (nearest hundredth)

Step-by-step explanation:

[tex]\mathsf{probability=\dfrac{number \ of \ favorable \ outcomes}{number \ of \ total \ outcomes}}[/tex]

Total number of marbles (total outcomes) = 2 + 6 + 7 = 15

⇒ Probability of the first marble being red = [tex]\dfrac{2}{15}[/tex]

As there is no replacement, the total number marbles is now 15 and there is only 1 red marble left.

⇒ Probability of the second marble being red = [tex]\dfrac{1}{14}[/tex]

So the probability of the 1st and 2nd marble being red is:

[tex]\dfrac{2}{15}\times \dfrac{1}{14} = \dfrac{1}{105}[/tex]  = 0.01 (nearest hundredth)