Since there are four marbles in the bag to begin with, that starts us off with 1/4 as the probability, the one being the green marble, while the four is the total number of marbles.
Since the green one wasn’t replaced, the probability stays at 1/4, the one being the red and the four being the total number of marbles.
1/4 x 1/4 = 1/16
Hope this helps, and I apologize if I misunderstood!
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<span>30 lbs.
The question itself tells you how to solve it. Since you're serving boneless chicken, that would be "meat with little or no bone, divide the number to be served by 3.5". And you've been given 100 guests. So:
100 / 3.5 = 28.57142857
And of the 4 options given 30 lbs is the closest, so that's the correct answer.</span>