Since the problem states that the numbers form a list,
therefore this means that there is equal spacing between the numbers. For
example, 1, 2, 3 are a list where 3 is the third number. The spacing between
them is increment of 1.
Now since 0.064 is the third number, therefore the first
number must be:
0.064 / 3 = 0.021
Answer:
0.021
