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CEMC Gauss (Grade 8), 2014

Geometry Difficulty 1.1 Junior Find the answer Canada

In a right-angled triangle, the measure of one angle is 55∘55^\circ. The measure of the smallest angle in this triangle is

Pick one

Solution

The spinner has 6 sections in total and 2 of these sections contain the letter PP.

Sections are equal to one another in size and thus they are each equally likely to be landed on.
Therefore, the probability of landing on a section that contains the letter PP is 26\frac26.

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.