Place ten halfpence in a row upon the table, then taking up any one of
the series, place it upon another, with this proviso, that you pass over
just two halfpence each time. Repeat this until there is not a single
halfpenny left. Let the following figures represent the halfpence:--
1 2 3 4 5 6 7 8 9 10
Place No. 4 upon No. 1; No. 7 upon No. 3; No. 5 upon No. 9; No. 2 upon
No. 6; and No. 8 upon No. 10. A little practice will enable the reader
to do this puzzle without referring to the figures.