CHOPPING THE CHOCOLATE
Barry was the happy owner of a giant chocolate bar, which he wanted to break up into 35 small squares. However, he couldn’t decide how to do it. He thought of breaking it into five strips and then breaking up the strips, but then he wondered whether he should break it instead into two large rectangles, and break up each of these separately.
Naturally, he wanted to make as few breaks as possible. Can you say what was the smallest number of breaks needed?