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Probability on the scale from 0 to 1

Probability on the scale from 0 to 1

Probability scale from 0 to 1 labelled impossible, unlikely, even chance, likely and certain, with a cross at one quarter Probability measures how likely an event is, and every probability must be between 0 and 1. A probability of 0 means impossible, 1 means certain, and 12\frac{1}{2}21​ means an even chance.

Probability Lesson

  1. IGCSE
  2. /Maths
  3. /Probability

Step-by-step lessons covering Edexcel IGCSE Maths Probability for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.