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
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
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 ?
(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
(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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