Before revision: To do so, one may only use the following along with the candle: a book of matches a box of thumbtacks Solution The candle problem The solution is to empty the box of thumbtacks, use the thumbtacks to nail the box to the wall, put the candle into the box, and light the candle with the match.
After revision: most efficientTo do so, one may only use the following along with the candle: a book of matches a box of thumbtacks Solution The candle problem The solution is to empty the box of thumbtacks, use the thumbtacks to nail the box to the wall, put the candle into the box, and light the candle with the match.