Hmm, I'm a little unsure about this one. I know risk is calculated based on likelihood and impact, but I can't remember if it's multiplication or division. I'll have to think this through carefully.
Ah, the + symbol in a regex - that's the one that means "one or more" of the preceding character or group, right? So in this case, it would be matching words that start with "d", have one or more of the letters "a", "e", or "i" in the middle, and then end with another "d". I'm feeling pretty confident about this one.
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