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Mathematics, 14.12.2021 23:50 eskarletche8

The mean length of 8 childrens' big finger is 4.3cm. The mean length of 5 adults' big finger is 13.6cm.
What is the mean length (rounded to 2 DP) of these 13 people's big finger?

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The mean length of 8 childrens' big finger is 4.3cm. The mean length of 5 adults' big finger is 13...

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