Probabilty- For Grade 11-Revision

Statistics Tutorial

Probabilty- For Grade 11-Revision


This probability tutorial is ideal for Grade 11 and for those who are sitting for O/L examination in Maths. It is a revision paper for the lesson “probability”

Sample Problem

One pencil is selected at random from a box containing 2 red pencils, 5 blue pencils and 4 green pencils. Find the probability of selecting a red pencil or a blue pencil


Probability of getting a red pencil= 2/11

Probability of getting a blue pencil= 5/11

Therefore probability of getting a red OR a blue pencil = 2/11 + 5/11
= 7/11

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