60%. That is the probability.
Half of 3.5 is 1.75 so 3.5 which is Monday plus Tuesday, 1.75 is 5.25 miles in all
I believe it is 4 to make it able to divide by both sides
The diver will make 12 stops before reaching the surface.
The answer to the question is 1/5^3
5^5/5^8= 1/5^(8-5)= 1/5^3
