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Saundarya
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Bunuel
A set of 13 different integers has a median of 20 and a range of 20. What is the greatest possible value of the integer in the set?

(A) 23
(B) 27
(C) 30
(D) 34
(E) 40

Median of 13 different integers = 7th Term = 20

Range = Highest - Lowest = 20

Sets is { -, -, -, -, -, -, [color=#ffff00]13, -, -, -, -, -, -)[/color]

For Highest value of largest value of set, th elowest value also should be maximized because their difference is constant which is 20 in this case

To maximize the lowest value we can start going backward from median value keeping every previous value highest
Highest value of the 6th term which must be less than 13 is = 12
Highest value of the 5th term which must be less than 12 is = 11
Highest value of the 4th term which must be less than 11 is = 10
Highest value of the 3rd term which must be less than 10 is = 9
Highest value of the 2nd term which must be less than 9 is = 8
Highest value of the 1st term which must be less than 8 is = 7

Lowest value is 7 i.e. highest value = 20+7 = 27

Answer: Option B

How does the 7th Term become 13?

Im sorry but im having a really hard time understanding answers posted by you on other questions as well. I would like to request to give a detailed analysis. Thanks in advance.

My bad... I read it wrong.. Median = 20 (not 13)

Median = 7th term because median term = (n+1)/2 th term = (13+1)/2 th term = 7th term

Now, I am going towards lowest value by decreasing the value from median and the decrease must be lowest because the lowest value should be as big as possible for the highest value to be as big as possible

Let me know if there is still something that bothers you in explanation.
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Given

    • A set of 7 different integers has a median of 9.
    • It has a range of 11 and an average of 10.

To Find

    • The highest possible value of the lowest integer in the set

Approach and Working Out


    • The median of the set is 20.
    • 6 numbers must be less than that and 6 more than that.
      o We need to increase the greatest number so we must increase the smallest as well.
      o It can be 14.
         As we need 6 numbers less than 20 and they are 14, 15, 16, 17, 18, & 19.
      o The highest could be 14 + 20 = 34.


Correct Answer: Option D
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Answer is 34

For those who selected option E - 40 as the answer

Range = Max - Min
20 = 40 - Min

Hence Min = 20
If Min Value is 20 which means all values on left side of Median are 20

Set = ( 20, 20, 20, 20, 20, 20, median (20), - - - - - -)

However, the question specifically said,"a set of 13 different integers..."

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