Answer :
[tex]\bf \begin{array}{lllllll}
tire&\cfrac{1}{6}&\stackrel{\downarrow }{\boxed{\cfrac{2}{6}}}&\stackrel{\downarrow }{\boxed{\cfrac{3}{6}}}&\stackrel{\downarrow }{\boxed{\cfrac{4}{6}}}&\cfrac{5}{6}&\stackrel{\downarrow }{\boxed{\cfrac{6}{6}}}\\\\
cone&&\boxed{\cfrac{1}{3}}&&\boxed{\cfrac{2}{3}}&&\boxed{\cfrac{3}{3}}\\\\
hurdle&&&\boxed{\cfrac{1}{2}}
\end{array}[/tex]
notice the overlapping obstacles, bear in mind that 2/6 is really just 1/3 in disguise, just as 3/6 is 1/2 when simplified, and so on.
notice the overlapping obstacles, bear in mind that 2/6 is really just 1/3 in disguise, just as 3/6 is 1/2 when simplified, and so on.