A pipe manufacturer makes pipes of four different sizes. The diameter of each pipe is two times the diameter of the pipe of the next smaller size. The diameter of the biggest pipe is 16 centimeters.

Question

What is the diameter of the pipe of the smallest size?

Answer 1

16/2 = 8

8/2 = 4

4/2 = 2

2/2 = 1

Answer 2

16/2=8