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Mathematics, 14.12.2021 23:50 MathChic68

The mean length of 3 childrens' big finger is 5.4cm. The mean length of 7 adults' big finger is 15.8cm. What is the mean length (rounded to 2 DP) of these 10 people's big finger?

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The mean length of 3 childrens' big finger is 5.4cm. The mean length of 7 adults' big finger is 15.8...

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