What is the arithmetic mean of first 20 - CUETMOCK

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Average

Question:

What is the arithmetic mean of first 20 odd natural number?

Options:

19

22

20

17

Correct Answer:

20

Explanation:

Mean = \(\frac{Sum\;of\;observations}{no.\;of\;observations}\)

Sum of first 20 odd no. = 20² = 400

Mean = \(\frac{400}{20}\) = 20

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