Probability Sprint
Apply the addition and multiplication rules, tell independent from dependent events, and count with permutations and combinations.
1 Probability sprint
90 seconds, 3 lives. Rules, counting, and complements — compute fast. Scores and best score are session-only.
Score
0
Streak
0
Lives
♥♥♥
Time
90s
Best (session)
0
Problem
Round over
0
Correct: 0 / 0 · Best this session: 0
2 How scoring works
- +10 points per correct answer; +15 once your streak reaches 5.
- A wrong answer costs one life. Three misses end the round.
- 90 seconds on the clock. Best score resets when you leave the page.