CAIE IGCSE Mathematics Core C8.1.1 Understand and Use the Probability Scale From 0 To 1 Questions

Practise Core CAIE IGCSE Mathematics by converting complete event counts into probabilities and placing or comparing outcomes on the scale from impossible at 0 to certain at 1.

Exam points

Place or label an event on the 0-to-1 probability scale using a complete sample-space count.
Distinguish impossible, certain and intermediate events when comparing outcomes on the scale.

[Maximum number: 1]

Elize, Lily and Marco start a business.

Lily buys 20 rolls of ribbon.

8 are red, 6 are blue, 4 are yellow and 2 are pink.
A roll of ribbon is chosen at random.
On the probability scale, draw an arrow ( ↓ ) to show the probability that this roll is
(a) yellow

Figure for Question CAIE IGCSE Mathematics Core C8.1.1 Understand and Use the Probability Scale From 0 To 1 Questions question 1 — CAIE IGCSE Mathematics Core

(b) not red

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CAIE IGCSE Mathematics Core C8.1.1 Understand and Use the Probability Scale From 0 To 1 Questions question 1