Probability Sprint
How fast can you compute probabilities? Beat the 60-second clock, guard your 3 lives, and build a streak — dice, coins, marbles, spinners, and cards, ramping from easy to hard.
How to play
You get 60 seconds and 3 lives. Each question is a quick probability challenge —
dice, coins, marbles, spinners, or cards. Type a simplified fraction (1/2), a decimal
(0.5), or a percent (50%).
- 1A correct answer scores +10 points. Streaks of 4 or more earn a bonus of +2 per streak level beyond 3 — keep the streak alive.
- 2A wrong answer costs 1 life, resets your streak, and reveals the correct answer.
- 3The game ends when the timer hits 0 or you lose all 3 lives. Questions start easy and ramp up.
Time
60
Score
0
Streak
0
Lives
Question 1
Best streak 0
Probability
Enter the answer, then press Enter or Submit.
Accepts simplified fractions, decimals, and percents.