Answer:
P(first marble will be green and the second will be green as well)= 5/22
Step-by-step explanation:
A goblet contains 2 red marbles, 6 green marbles, and 4 blue marbles.
Total number of marbles= 2+6+4
                    =12
P(first marble is green)=no. of green marbles/total number of marbles
                 =  6/12
                = 1/2
P(second marble is green and we didn't put the first marble back)
=no. of green marbles left/total marbles left
= 5/11
Hence, P(first marble will be green and the second will be green as well)
    =[tex]\dfrac{1}{2}\times \dfrac{5}{11}[/tex]
   = 5/22
