Related Clues:

• Word after word, in math class
• Challenging request
• Dilemma
• Sticky wicket
• Math exercise
• Situation, so to speak
• Leak on a ship, e.g.
• Mathematical challenge
• Math question
• What someone looking for action might say
• "Something wrong?"
• Quandary or dilemma
• Question or source of perplexity
• Something that needs solving
• Difficulty, puzzle