The greatest common divisor of four numbers has been found; how can we quickly select three more numbers so that the found greatest common divisor remains the greatest common divisor of all seven numbers?
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47. It is enough to multiply the greatest common divisor of the given numbers by any three numbers and add the resulting products to the given numbers.
Source: NuminaMath-1.5,
licensed Apache-2.0.
Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.