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Ordering Test Questions for Competitive Exams

Ordering Test 

The arrangement of haphazard things in a particular or definite order is called as the ordering. These things may be arranged on the basis of their size, age or characteristic etc. Questions concerning following parts may be asked in this test- . . .

1.  Position series
2. Height series
3. Age series
4. Circular series
5. Line series
6. Square series

Position series

In these . questions, . the position of· some persons from up or down or from left or right is given and then the total no. of persons is asked. The vice - versa of this . is also possible. Some important formulae for these type of questions-

Formula 1

Total no of persons =[Position of person from upward + position of person from downward ]- 1

                                                                Or

Total no of persons =[Position of person from right +position of person from left]- 1

Formula 2

Position of person from upward= [Total no of persons-  position of person from down] +1

                                                Or

Position of person from right= [Total no of persons-  position of person from left] +1

Formula 3

Position of person from downward= [Total no of persons-  position of person from up] +1

Position of person from left = [Total no of persons-  position of person from right] +1

Formula 4

If two persons are on a definite position from left and right and they interchange their  Positions then one of them moves some positions ahead in his own direction then-

I. Total number of persons =[First position of first person + Second position of second person ]-1

II. Second position of first person or second position of second  person 

         = [Difference of two positions of second person]+ [First position of first person]

                                                            Or

         =[difference of two positions of first person]-[first position of second person ]

 

Formula 1 :Example

The position of Jitendra from upwards is 27th and from downwards is 23rd in the class. What is the total no. of students in the class?

(A) 50
(B) 48
(C) 47
(D) 49
(E) None of these

 Answer with Explanation-(D)

Total number of students in class= [ Position of  Jitendra from up + Position of Jithendra from down ] = (27 + 23) - I = 50-1 = 49

Formula 2:Example

Total no. of students in the class of Deepu is 10. Among them the position of Deepu from downward  is 4 then what is his position from upward ?

(A) 7
(B) 6
(C) 5
(D) 9
(E) None of these

 Answer with Explanation-(A)
Position of Deepu from upward= [Total no of persons- position of person from down] +1
                                                   =[10-4]+1=7

 Formula 3 :Example

 Total no. of students in the class of Deepu is 10. Among them the position of Deepu from upwards is 7th then what is his position from downwards ?

(A) 4
(B) 3
(C) 5
(D) 2
(E) None of these

Answer with Explanation-(A)
Placement of Deepu from downward = [total no- place of Deepu from upward] +1
                                                            = [10-7]+1=4

Formula 4: Example

In a line of. girls, Shweta's position from right is 25th and Manju is on 13 th position from left. They both interchange their places. Now, Manju is on 23rd position from left. What will be the position of Shweta from right ?
(A) 36th
(B) 33rd
(C) 31st
(D) 35th
(E) None of these

Answer with Explanation-(D) Using formula (4)

Second position of first person or second position of second person 
    = [Difference of two positions of second person]+ [First position of first person]

Second Place of Shweta=[ Difference of two positions of Manju]+[ First position of Shweta ]

                                       = [23-13]+ 25 = 10+25=35

Height Series Test

In these questions, a group of persons in disordered heights is given. We have to arrange them orderly and find their positions.

Example 1. Ram is taller than Shyam, but not as much as Rajan. Arjun is taller than Sohan who is shorter than Shyam. Who is the shortest?

(A) Rajan
(B) Ram
(C) Arjun
(D) Shyam
(E) None of these

Answer with Explanation-(E)
Write the each statement as inequality relation
Ram is taller than Shyam, but not as much as Rajan = Rajan>Ram>Shyam
Arjun is taller than Sohan who is shorter than Shyam. Arjun>Sohan<Shyam
Combining both inequality relations Rajan>Ram>Shyam>Sohan<Arjun
From above it is clear that Sohan is shorter than every other person.
Thus, Sohan is the shortest.

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