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← Probability & Statistics

Mathematics · Medium lesson

Compound Probability

Push a bit harder. Apply what you know to less familiar problems.

5

Questions

~4

Minutes

3

Hints/Q

Confidence tracking, 3-tier hints and instant feedback.

What you'll learn

  • 1P(A and B) = P(A)×P(B) if independent.
  • 2P(A or B) = P(A)+P(B) if mutually exclusive.
  • 3Frequency trees help.
  • 4Expected = P × trials.

Question mix

  • Fill the gap×4
  • True / False×1

How it works

Score ≥ 80% to unlock the next level
  • 1

    Rate your confidence

    Tell us how sure you feel before answering. It powers your weak-topic map.

  • 2

    Use hints if stuck

    Reveal up to 3 progressive hints per question. Using fewer earns more points.

  • 3

    See what went wrong

    Instant feedback solves the exact question you just answered, so nothing stays fuzzy.

Ready when you are. This takes about 4 minutes.