Some basic formulas to determine the positioning of a person:
Formulas for vertical & Horizontal
Note: The above formulas are only for a single person’s position
In a row of 40 students, A is 13th from the left end, find the rank from right end.
Solution -: Total = 40 students
A’s rank from right side = Total + 1 – left
= 40 – 13 + 1 = 27 + 1 = 28
In a row ‘P’ is 25th from left end, Q is 30th from right end. Find the total no. of students in all.
Solution -: Can’t be Determined as there are more than 1 possibilities in this case
When total is not given and 2 persons positions from left and right are given, then answer is Can’t be Determined
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