Rules: answer as many as you can in 60 seconds. Correct = 100 × your streak multiplier (3 in a row → ×2, 6 in a row → ×3). A wrong answer costs a life and resets the streak — you have 3 lives, and skipping costs 3 seconds and scores nothing. Lose all 3 lives and the sprint ends early; finish with all lives intact for a flawless bonus. Use the 50:50 Joker once per sprint to remove two wrong answers.