2. How many nonnegative integer solutions are there to the equation x + 2y + 3z = 17?

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2024/02/04

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1. There was a class of 41 people divided into three groups A, B, and C, and the average score of subject natural’s test was 89.7 points; the average score of group A was 89.8 points; the average score of A, B combination was 88.5 points; the average score of A and C combination was 91 points, and how many people were in each of groups A, B and C?

2. How many nonnegative integer solutions are there to the equation x + 2y + 3z = 17?

詳解 (共 1 筆)

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