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Sum of first n natural numbers

Find the arit...

Question

Find the arithmetic mean of 17 and 19.

A

17.5

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B

18

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C

18.5

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D

None of these

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Solution

The correct option is B 18
Arithmetic mean of 17 and $19 = \frac{17 + 19}{2} = \frac{36}{2} = 18$

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Sum of first n natural numbers

Standard X Mathematics

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