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प्रथम n प्राकृत संख्याओं का माध्य -...

प्रथम n प्राकृत संख्याओं का माध्य -

A

`(n+1)//2`

B

` (n-1) //2`

C

`n//2`

D

none of these

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A
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अंकीय समस्या | संख्याओं का योग

i की घात|सम्मिश्र संख्याएँ|सम्मिश्र संख्याओं का बीजगणित |दो सम्मिश्र संख्याओं का गुणन |सम्मिश्र संख्याओं के गुणन के गुणधर्म |अभ्यास कार्य|दो सम्मिश्र संख्याओं का भागफल |अभ्यास कार्य|सारांश

भूमिका |संख्याओं की जानकारी |प्राकृत संख्याएँ |पूर्ण संख्याएँ |पूर्णांक |पूर्णांकों के प्रकार |परवर्ती तथा पूर्णवर्ती |प्रश्न अभ्यास |OMR

समिश्र संख्याओं का बीजगणित |समिश्र संख्याओं का मापांक एवं संयुग्मी |मापांक के गुण तथा उदाहरण प्रश्न

MCGROW HILL PUBLICATION-STATISTICS -EXERCISE (LEVEL-1 ( SINGLE CORRECT ANSWER TYPE QUESTIONS))
  1. प्रथम n प्राकृत संख्याओं का माध्य -

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  2. The arithmetic mean of first n odd natural numbers, is

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  3. The arithmetic mean of the squares of the first n natural numbers is

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  4. The arithmetic mean of the series 1,2,2^(2) ,…….2^(n-1) is

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  5. The arithmetic mean of the series ""^(n) C0 , ""^(n) C1, ""^(n) C2….,"...

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  6. The mean of the series a, a + d, a + 2d, …, a + 2 nd, is

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  7. {:("Variate (x) ", 0, 1, 2, 3, ... , n ),("Frequency (f)", "...

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  8. The mean height of 25 (male workers in a factory is 161 cms and the me...

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  9. The average salary of male employees in a firm was Rs. 5200 and that o...

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  10. The mean weight of 9 items is 15. If one more item is added to the ser...

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  11. For a certain frequency table which has been partly reproduced here ,...

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  12. The value of median for the data Income (in Rs. ) " " 1000...

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  13. The median from the following date : {:("Mid-value","Frequency","Mi...

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  14. In a discrete series , the relation between s.d.s and range r is

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  15. if A.M.,G.M. and H.M. in series are equal then

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  16. For a group containing 100 observations, the arithmetic mean and stand...

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  17. A sample of 90 values has mean 55 and standard deviation 3. A second s...

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