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If the mean of first n even natural numb...

If the mean of first n even natural numbers is n itself then n is

A

100

B

2000

C

80000

D

not possible

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Verified by Experts

The correct Answer is:
D
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CENGAGE-STATISTICS AND PROBABILITY -TEST YOURSELF (MCQ)
  1. If the mean of data x, 4, 6, 8, 10 is 6 then value of x is

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  2. The mean of data a-3d, a-2d, a-d, a, a-d, a+2d, a+3d is

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  3. If the mean of first n even natural numbers is n itself then n is

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  4. If the mean of first n odd natural numbers is n itself

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  5. If mean of first three terms is 12 and mean of last two terms is 4.5 t...

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  6. A group of 12 items has mean 5. If mean of 5 of these items is 3.6 the...

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  7. If a car goes from A to B at a speed of x km/hr and returns from B to ...

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  8. The median of first 25 odd natural numbers is

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  9. Following table represents the marks in a subject of students of a cla...

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  10. If the difference between mean and mode of a data is 21, then differen...

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  11. The mean of 5 items of a data has been wrongly calculated as 30 becaus...

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  12. If ab+bc+ca=0 and mean of a^(2),b^(2),c^(2) is 27 then mean of a, b, c...

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  13. If a+b+c=0 and abc=9 then mean of a^(3),b^(3),c^(3) is

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  14. If the mean and median of a set of numbers are 8.2 and 8.4, respective...

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  15. The first quartile for data 5, 7, 4, 4, 6, 7, 2 is

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  16. In an ungrouped data if Q(1),Q(2)andQ(3) are first, second and third q...

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  17. If barx is the mean of x(1),x(2),…,x(n) then the value of sum(i=1)^(n)...

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  18. If the first 10 elements of a set are replaced by (x(i)-10), where i=1...

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  19. If the difference between mean and mode is x and that of mean and medi...

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  20. Probability of getting head in a biased coin is 2/3. If the coin is to...

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