Katherine's room is too far away from the bathroom to hear whether someone is using the shower. And yet, Katherine knew that her mom had taken a shower this morning. What tipped her off?

What do the words “end,” “multiplication,” “kitchen,” and “coffee” have in common? Hint: They are all adjectives for one noun.

Daniel filled a bathtub up to 1 inch from the top. No more water was put in it, but it still overflowed. How can that be?