Exercícios: Typescript inicial Jamile, Guilherme e Andrea

https://github.com/Jhamyllie/exercicios-typescript-T26

Open the linked repository at https://github.com/Jhamyllie/exercicios-typescript-T26 and read the exercise requirements first. The issue does not name files, tests, or a specific change, so confirm the intended scope before starting; done should mean completing the requested initial TypeScript exercises and verifying their expected results.

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