# 3 Fun Riddles Fit For Math-Addicted Reasoners 3 Fun Riddles Fit For Math-Addicted Reasoners

By Katrina Schwartz

These riddles will get you thinking about math and a variety of approaches to solving math problems, and they’re better if you know your K-12 fractions. If not, skip ahead to the next number!

Riddle Number 1

Scientists have drawn a line from where one jellyfish goes to where another jellyfish goes. So what’s the longest way between two places where jellyfish go? Where do you draw the line? Where is the maximum distance?

Description: Jellyfish can be an elusive subject. Jellies are often found camouflaged in all kinds of unusual places. One of the fish that has attracted scientists’ curiosity is the Olympia jellyfish, which can reach 10 feet in length. When researchers began mapping how a jellyfish circles a particular beach and how the surface currents drive the movements, they noticed something interesting about the depth difference between two and five piers. They found that those at five piers were deeper than those at four. To tease apart the differences, the scientists drew a line between the two areas and found that the five piers are about half a mile to one mile deeper than the four piers.

Solution: First, describe the difference in depth for each pier. Second, draw the ruler horizontally. Third, trace the angle from point A to point B, and use the ruler to trace the whole line from point A to point B. Fourth, extend the line from point A to point B as far as the lighter side of the line shows. Use this to draw the length of the five pier longways, which means the longest distance between two points where a jellyfish goes.