Jack tears off three stickers so that they stay joined edge to edge.
In how many different ways can he do this?
Dots and lines
The diagram shows a 5 by 5 array of dots.
Without taking your pencil from the paper, join all 25 dots using eight straight lines.
Hint: your lines do not necessarily have to start and end on the dots.
from page 30
Dots and linesJack's stickers 16 different ways: ACE CEG BDF DFH ABD ABC CDE CDF EFG EFH CDA CDB EFC EFD GHE GHF