Maths Olympiad Prep

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, 2022

Algebra Difficulty 1.2 Junior Find the answer Canada

The expression $(5×5)+(5×5)+(5×5)+(5×5)+(5×\$(5\times 5)+(5\times 5)+(5\times 5)+(5\times 5)+(5\times 5)$ is equal to

Pick one

Solution

The given sum includes 5 terms each equal to (5×5)(5 \times 5).

Thus, the given sum is equal to $5 ×\times (5
×\times 5)whichequals which equals 5 ×\times
25$ or 125.

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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.