Finding Middle Value Overlap Case


 
 
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Finding Middle Value Overlap Case

Finding Middle Value ( Overlap Case): In these type of questions we are supposed to find the number of persons between to given persons. Overlap case is a situation when Total Number is less than the sum of the rank from both the end. Values required to find the mid number :

  • Rank of one person from one end.
  • Rank of another person from another end.
  • Total number.
  • Formula to Find Mid Number (Overlap Case) :  When Total Number is less than the addition of rank from both the end. Then such question is based on Mid Number (Overlap Case).

    Mid No. (Overlap Case) = (Rank of one person from one end + Rank of another person from another end) - (Total Number + 2).

    Illustration: In a row of 27 boys, X is 17th from left end and Y is 13th from right end. Find the number of boys are in between X and Y?

    A. 1               B. 2              C. 3              D. 4              E. 5

    Answer: A

    Solution : - Given : Total Number = 27

    Rank of X from left end = 17

    Rank of Y from right end = 13

    To find : How many boys are in between X and Y.

    Formula is :

    Mid No. = (Rank of X from left end + Rank of Y from right end) - (Total No. + 2)

    Mid No. = (17 + 13) - (27 + 2)

    Rightarrow     30 - 29 = 1

    Hence The correct Option is A

    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    In a row of 20 men, X is 15th from left end and Y is 10th from right end. Find the number of men are in between X and Y ?

    Right Option : B
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    Question : 2

    In a que at the railway station ticket counter 22 people are standing, Mr Kumar is 20th from left end and Mr. Gupta is 14th from right end. Find the number of persons between Mr Kumar and Mr Gupta ?

    Right Option : B
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    Explanation
    Question : 3

    Along the road side 25 tree are planted in a row, The Banana tree is 18th from left end and The mango tree is 14th from right end. Moreover a Shisham tree is 15th from the left Find the number of tree between mango tree and shisham tree?

    Right Option : C
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