Question:
How can you take 9 toothpicks and make ten without breaking the toothpicks?
Answer:
TEN (every line making the letters in the word ten is one toothpick. There are nine lines you draw when writing ten, so there are 9 toothpicks making TEN).
Try another Brain Teaser:
You throw away the outside and cook the inside. You eat the outside and throw away the inside. What did you eat?