List of top Data Interpretation & Logical Reasoning (DILR) Questions

Using the same caselet from questions 29-32 (A shop sells items A and B. Item A: cost price Rs. 100, sold at 20% profit. Item B: cost price Rs. 200, sold at 25% profit. Total profit from 10 items is Rs. 350, with 5 items of A and 5 items of B sold), what is the percentage contribution of item A's profit to the total profit?

Course Enrollment
In a college, 120 students are enrolled in three courses: Math (M), Physics (P), and Chemistry (C).

- 70 take Math
- 60 take Physics
- 50 take Chemistry
- 30 take both Math and Physics
- 20 take both Physics and Chemistry
- 15 take both Math and Chemistry
- 10 take all three courses

Team Selection Puzzle
A manager must select a team of 3 employees from 5 (E1, E2, E3, E4, E5) with the following conditions:

1. If E1 is selected, E2 is not selected
2. E3 and E4 cannot both be selected
3. E5 is always selected

Expenditure Distribution
A company’s expenditure in 2015 (total Rs. 200 crores) is distributed as follows:

- Salaries: 40%
- Rent: 20%
- Utilities: 15%
- Marketing: 10%
- Miscellaneous: 15%

Book Arrangement
Five books (A, B, C, D, E) are arranged in a row on a shelf. The following conditions apply:

1. Book A is not at either end
2. Book B is to the immediate left of Book C
3. Book D is not adjacent to Book E
4. Book E is in the third position

Sales Revenue of Four Stores
The table below shows the sales revenue (in Rs. lakhs) of four stores (P, Q, R, S) in three months (January, February, March) in 2015.

Store	January	February	March
P	20	25	30
Q	15	20	25
R	30	35	40
S	10	15	20

Using the same caselet, if the shop sells 10 more items (5 additional A and 5 additional B) under the same profit conditions, what will be the total profit from all 20 items?

In a group of 5 people, each shakes hands with every other person exactly once. How many handshakes occur?

In a logical reasoning set, three people (P, Q, R) speak:
- P: I am not the tallest.
- Q: R is taller than P.
- R: Q is the tallest.
Who is the tallest?

Using the same logic puzzle, which color is in House 3?

A group of 6 friends (A, B, C, D, E, F) must be seated in a circle. A and B cannot sit together. How many arrangements are possible?

In a logic puzzle, 4 houses are numbered 1 to 4. Each has a unique color (Red, Blue, Green, Yellow) and a unique pet (Cat, Dog, Bird, Fish). House 1 is Red. The Cat is in House 3. The Dog is not in House 4. Which house has the Dog?

In a seating arrangement, 5 people (A, B, C, D, E) sit in a row. A and B must sit together, and C cannot sit at the ends. How many arrangements are possible?

In a logical reasoning set, three statements:
- If A is true, then B is false.
- If B is true, then C is true.
- C is false.
Is A true or false?

A shop sells pens at Rs. 10, pencils at Rs. 5, and erasers at Rs. 2. If a customer buys 3 pens, 4 pencils, and 5 erasers, what is the total cost?

A company has 3 teams (X, Y, Z) with tasks completed:

Team	Tasks
X	40
Y	50
Z	60

If each task takes 2 hours, what is the total time taken by Team Y?

Using the same logic puzzle, who is the Doctor?

In a logic puzzle, 4 people (A, B, C, D) have professions (Doctor, Lawyer, Engineer, Teacher). A is not the Doctor. B is the Lawyer. The Teacher is not C. Who is the Engineer?

Using the same Venn diagram, how many students study exactly two subjects?

A Venn diagram shows students studying Physics (P), Chemistry (C), and Biology (B):
- P only: 10, C only: 15, B only: 20
- P and C only: 5, P and B only: 8, C and B only: 7
- All three: 5
How many students study at least one subject?

A line graph shows temperatures (in °C) over 5 days:

Day	Temperature
Mon	20
Tue	22
Wed	25
Thu	24
Fri	23

What is the average temperature?

Using the same temperature data, which day had the highest temperature?