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Mathematics, 29.09.2019 19:10 teresagonzalez6652

Here are the test marks of 6 girls and 4 boys .

girls: 5 3 10 2 7 3
boys: 2 5 9 3

work out the mean mark of all students.

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Here are the test marks of 6 girls and 4 boys .

girls: 5 3 10 2 7 3
boys: 2 5 9...

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