The answer is B) 1/4.
There are 2 outcomes in his tree that have all coins with the same side up: HHH and TTT. There are 8 total outcomes. This makes the probability 2/8 = 1/4.
3
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4(5z+16)
I'm assuming you want to include all of the numbers
.4 is smallest, 1/2 , then 60% is greatest.
If a 6 foot tall person cast an 8 foot shadow then the scale would be 4:3. So the statue will be aproximately 233,4 feet long (Sorry if I'm wrong)