Maths · KS3 Y9 · Probability

Mutually exclusive events

Mutually exclusive eventsFree0:46Heddy Score 3 of 7, below the standard
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What you need to know

  • Mutually exclusive events cannot happen together, so their intersection has probability zero.
  • For mutually exclusive A and B, P(A and B) = 0.

In this clip

Runs 0:46, from 0:16 to 1:02 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

551K views · 24.9K likes · Ace Tutors 87.3K subscribers

As reported by YouTube on 2026-11-03. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

The two short sections contrast mutually exclusive events with independent events.

Ace Tutors on YouTubechecked 2026-10-20

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