Ordering and Ranking

Q: How many people are standing in the row facing North? I. A is 12th from the left end and B is 18th from the right end. II. There are exactly 5 people standing between A and B.

Correct Answer: Option D (Statements I and II together are not sufficient.). From I and II, A is 12th from left and B is 18th from right, with 5 people between them. This creates two possibilities: Non-overlapping (12 + 18 + 5 = 35) or Overlapping (12 + 18 - 5 - 2 = 23). Since there is no clarity on whether A is to the left or right of B, both statements together are not sufficient.

Q: What is the total number of students in the class? I. Ram's rank is 15th from the top and 26th from the bottom. II. Shyam is 5 ranks below Ram and 21st from the bottom.

Correct Answer: Option A (Statement I alone is sufficient, but Statement II alone is not.). Statement I alone gives Ram's rank from both ends. Total students = (Rank from top + Rank from bottom) - 1 = (15 + 26) - 1 = 40. Statement I alone is sufficient. Statement II is unnecessary.

Q: How many boys are in the straight line? I. P is 10th from the left end and Q is 18th from the left end. R sits exactly between P and Q. II. R is 15th from the right end.

Correct Answer: Option C (Both statements together are sufficient, but neither statement alone is sufficient.). From I, P is 10th from the left and Q is 18th from the left. There are 7 people between them. R is exactly in the middle, so R is 14th from the left. From II, R is 15th from the right. Total = (14 + 15) - 1 = 28. Both statements are required.

Q: What is the total number of people in the queue? I. X is 20th from the front and Y is 25th from the back. II. X is standing ahead of Y and there are exactly 4 people between them...

Correct Answer: Option C (Both statements together are sufficient, but neither statement alone is sufficient.). From I, X is 20th from front and Y is 25th from back. From II, X is ahead of Y with 4 people between them. Since X is definitively ahead, there is no overlapping. Total = 20 (up to X) + 4 (between) + 25 (from Y to end) = 49. Both are required.

Q: How many girls are standing in the row? I. M is 10th from the left end. II. N is 15th from the right end. If M and N interchange their positions, M becomes 18th from the left end...

Correct Answer: Option C (Both statements together are sufficient, but neither statement alone is sufficient.). From I, M is 10th from left. From II, N is 15th from right. If they interchange, M becomes 18th from left. This new position of M is the same as N's old position (15th from right). Total = (18 + 15) - 1 = 32. Both statements are required.

50 Questions

Practice Ordering and Ranking questions with answers and step-by-step solutions. These problems are curated from recent campus placement test papers (TCS, Infosys, Wipro, Cognizant, Accenture) and competitive government exams (SSC CGL, Bank PO, RRB NTPC, UPSC).

Quick Mode: Practice Questions Timed Mock Test

Ordering and Ranking: Reference Context & Data Shared for questions below

Reference CaseletSet 1: Total Number of Persons in a Row

Data Sufficiency: Ordering and Ranking (Medium to Hard Level)

Evaluate the two statements and determine which of the options is correct.

How many people are standing in the row facing North?
I. A is 12th from the left end and B is 18th from the right end.
II. There are exactly 5 people standing between A and B.

medium

What is the total number of students in the class?
I. Ram's rank is 15th from the top and 26th from the bottom.
II. Shyam is 5 ranks below Ram and 21st from the bottom.

medium

How many boys are in the straight line?
I. P is 10th from the left end and Q is 18th from the left end. R sits exactly between P and Q.
II. R is 15th from the right end.

medium

What is the total number of people in the queue?
I. X is 20th from the front and Y is 25th from the back.
II. X is standing ahead of Y and there are exactly 4 people between them.

medium

How many girls are standing in the row?
I. M is 10th from the left end.
II. N is 15th from the right end. If M and N interchange their positions, M becomes 18th from the left end.

medium

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Ordering and Ranking

How many people are standing in the row facing North?
I. A is 12th from the left end and B is 18th from the right end.
II. There are exactly 5 people standing between A and B.

Community Discussion & Shortcut Formulas

What is the total number of students in the class?
I. Ram's rank is 15th from the top and 26th from the bottom.
II. Shyam is 5 ranks below Ram and 21st from the bottom.

Community Discussion & Shortcut Formulas

How many boys are in the straight line?
I. P is 10th from the left end and Q is 18th from the left end. R sits exactly between P and Q.
II. R is 15th from the right end.

Community Discussion & Shortcut Formulas

What is the total number of people in the queue?
I. X is 20th from the front and Y is 25th from the back.
II. X is standing ahead of Y and there are exactly 4 people between them.

Community Discussion & Shortcut Formulas

How many girls are standing in the row?
I. M is 10th from the left end.
II. N is 15th from the right end. If M and N interchange their positions, M becomes 18th from the left end.

Community Discussion & Shortcut Formulas