Answer:
0.5
Step-by-step explanation:
If an event is equally likely to occur as it is not to accur, then it's 50% and 50%, which it's the same as 0.5
9514 1404 393
10√5
The geometric mean of two numbers is the square root of their product.
m = √(20×25) = √500 = √100 × √5
m = 10√5
The geometric mean of 20 and 25 is 10√5.