In this question, you are flipping 3 coins simultaneously until you get all 3 heads, so we are looking at a binompdf, where x=5 (landing a success on the 5th trial), and p=0.5^3 (probability of success, meaning the probability of getting three heads). Plugging in to your calculator, binompdf(0.125,5)=0.0733
I believe the answer is A) 10 ions of Mg and 20 ions of F
How does all those impact today the environmental
This answer is true.
If there is so much lettuce in the world that it can be had very easily in any venue, then the monetary value of the lettuce is diminished because it is so easily had.