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A listener is 2m from a source of sound waves. If the listener moves to a distance of 20m, by how much will the sound level decrease?

The Fact

Here’s a cool one! Sunflowers’ spiral shapes follow a Fibonacci sequence (i.e., 1, 1, 2, 3, 5, 8…): each number is the sum of the previous two digits. This is how light is maximized for each of the flowers.

The man reads mortgage contract at the bank. Staff guy asks him: Well did you learned it? Confused with something? The man: yes, here's 1199 section, 23 article: "To put bank's stamp on debtor's forehead..."