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Question
The mean of first 10 even natural numbers is ______.
Options
8
10
11
12
MCQ
Fill in the Blanks
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Solution
The mean of first 10 even natural numbers is 11.
Explanation:
The first 10 even natural numbers are 2, 4, 6,..., 20.
Their sum = `10 × ("first" + "last")/2`
= `10 xx (2 + 20)/2`
= 110
Mean = `"Sum"/10`
= `110/10`
= 11
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