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1.  
In a row, A is 15th from the left and B is 22nd from the right. A is to the left of B and exactly 6 people sit between them. How many people are in the row?

Correct Answer: B [43]

Explanation:

No overlap: 15 + 6 + 22 = 43.

2.  
In a queue, Mala is 11th from the front and Rani is 9th from the back. Exactly 3 people stand between them. What is the minimum number of people in the queue?

Correct Answer: C [15]

Explanation:

Rani ahead of Mala: 11 + 9 − 3 − 2 = 15 (valid as 11, 9 ≥ 5).

3.  
P is 9th and Q is 21st from the left of a row. They interchange, and P becomes 16th from the right. How many people are in the row?

Correct Answer: A [36]

Explanation:

P now sits in Q's old chair: 21st from the left and 16th from the right → 21 + 16 − 1 = 36.

4.  
Among the students who passed, Ravi ranks 12th from the top and 28th from the bottom. 5 students failed and 3 were absent. How many students are in the class?

Correct Answer: E [47]

Explanation:

Passed = 12 + 28 − 1 = 39; class = 39 + 5 + 3 = 47.

5.  
Among six friends J, K, L, M, N and O (all of different weights), K is heavier than M but lighter than O. J is heavier than O. N is lighter than M. L is heavier than K but lighter than O. Who is the third heaviest?

Correct Answer: D [L]

Explanation:

Chain: J > O > L > K > M > N.

6.  
Which of the following is/are correct?
I. A person who is 12th from both ends is in a row of 23.
II. In a row of 40, the 15th from the left is 25th from the right.
III. Between the 4th and the 9th from the left there are 4 people.

Correct Answer: C [Only I and III]

Explanation:

I: 12 + 12 − 1 = 23 ✓. II: 40 − 15 + 1 = 26, not 25 ✗.

7.  
How many people are there in the row?
I. A is 14th from the left end and 9th from the right end.
II. B sits 3rd to the right of A and is 6th from the right end.

Correct Answer: A [Statement I alone is sufficient]

Explanation:

I: 14 + 9 − 1 = 22 ✓. II only gives A's place from the right (9th); the left count is unknown ✗.

8.  
Quantity I: number of people in a row in which M is 13th from the left and 17th from the right.
Quantity II: number of people between X and Y in a row of 40, where X is 5th from the left and Y is 8th from the right.

Correct Answer: A [Quantity I > Quantity II]

Explanation:

I: 13 + 17 − 1 = 29. II: Y is 33rd from the left → 33 − 5 − 1 = 27.

9.  
32 students stand in a row facing North. Arjun is 13th from the left end. He moves 5 places to his right. What is his position from the right end now?

Correct Answer: A [15th]

Explanation:

Facing North, right = towards the right end: 13 + 5 = 18th from the left → 32 − 18 + 1 = 15th.

10.  
Kiran sits exactly in the middle of a row and is 16th from the left end. How many people are in the row?

Correct Answer: D [31]

Explanation:

Middle → 16th from both ends → 16 + 16 − 1 = 31.

11.  
Reverse question: Vani is 8th from the left end of a row. After 4 more people join the row at the left end, she is 20th from the right end. How many people were in the row before the 4 joined?

Correct Answer: C [27]

Explanation:

After joining she is 12th from the left: 12 + 20 − 1 = 31 → before: 31 − 4 = 27.

12.  
Trick Spotter: X is 17th from the left and 23rd from the right of a row. The fastest correct way to find the number of people is:

Correct Answer: B [17 + 23 − 1]

Explanation:

Twice-Counted Me: 17 + 23 − 1 = 39.

13.  
Five students A, B, C, D and E scored different marks. A scored more than B but less than E. C scored more than E. D scored less than B. Who scored the second highest marks?

Correct Answer: E [E]

Explanation:

Chain: C > E > A > B > D.

14.  
In a class of 50, P is 4 ranks above Q. Q is 27th from the bottom. What is P's rank from the top?

Correct Answer: B [20th]

Explanation:

Q from the top = 50 − 27 + 1 = 24th; 4 ranks above → 20th.

15.  
Spot My Mistake: "Row of 52. A is 34th from the left and B is 27th from the right. (1) B from the left = 52 − 27 = 25. (2) B is to the left of A. (3) Persons between = 34 − 25 − 1 = 8." Which step is wrong?

Correct Answer: A [Step 1 – B is 26th from the left, so the answer is 7]

Explanation:

Other end = T − p + 1 = 52 − 27 + 1 = 26; between = 34 − 26 − 1 = 7.

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