The arithmetic mean of first ten natural numbers is

7.5

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6

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5.5

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10

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Solution

The correct option is C $5.5$
First ten natural numbers are : $1, 2, 3, 4, 5, 6, 7, 8, 9, 10$
Mean = $\frac{S u m}{C o u n t o f o b s e r v a t i o n s}$
Mean = $\frac{1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10}{10}$
Mean = $\frac{55}{10}$
Mean = $5.5$

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