The probability of pulling a red worm first is 6/23. After eating the red worm, there will be 22 gummy worms left in the bag, of which 12 are green. So the probability of pulling a green worm next is 12/22 (or simplifying it to 6/11). To get the probability of both events happening one after the other, you need to multiply the probabilities together. That gives you (6/23) * (6/11) which equals 36/253, or approximately 0.1423 or 14.23%. So the probability of pulling a red worm first, followed by a green worm, is 14.23%.