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📌 Section 1 is Logical reasoning specially designed for CAT
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SET 1 — 🔍 CAT Level
Each of the seven persons- D, E, F, G, H, I and J attends a different seminar among Electronics, Communications, Electrical, Management, Information Technology, Computers and Mechanics on a different day from Monday to Sunday but not necessarily in the same order.
E attends the seminar on the topic Information Technology on Wednesday.
Two persons attend the seminars between the days on which E and the one who attend the seminar on the topic Mechanics attend.
The number of persons who attend the seminar between I and the person who attends the seminar on the topic Mechanics is the same as the number of persons who attend the seminar between the days on which J and the person who attends the seminar on the topic Electrical. None among I, J and the one who attends on Electrical attend on Monday or Sunday.
H attends the seminar on a day which is between the days on which J and I attend.
F attends seminar either on topic Electronics or on Computers.
G attends the seminar on a day before the day on which the one who attends the seminar on the topic Computers. The number of persons attend between the days on which G and the one who attends seminar on the topic Computers is same as the number of persons attend between the days on which the one who attend seminar on Computers and D.
D attends seminar neither on the topic Management nor on the topic Electronics. H does not attend the seminar on Electronics.
Question 1
On which day of the week did H attend the seminar?
A. Monday
B. Tuesday
C. Wednesday
D. Cannot be determined
Question 2
How many persons attend seminar between the days on which I and D attend?
A. Two
B. Three
C. More than three
D. None
Question 3
Who attends the seminar on Management?
A. F
B. G
C. E
D. Cannot be determined
Question 4
Who attends the seminar on Sunday?
A. D
B. F
C. J
D. I
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✅ Answers & Explanations
From (i), (ii), (iii) and (iv), H attends the seminar either on Thursday or on Friday. I and J attend the seminar on Tuesday and Saturday or Thursday and Saturday in any order.
From the above information, we get the following arrangements.
Case (a)
Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | |
|---|---|---|---|---|---|---|---|
Person | I | E | J | ||||
Seminar | Electrical | I.T. | Mechanics |
Case (b)
Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | |
|---|---|---|---|---|---|---|---|
Person | E | I | H | J | |||
Seminar | I.T. | Electrical | Mechanics |
From (v), (vi), (vii) and the above information Case (b) is eliminated.
I attends the seminar on Tuesday on the topic Electrical. J attends the seminar on Saturday on the topic Mechanics. H attends the seminar on Computers on Thursday or Friday. F attends the seminar on the topic of Electronics or Computers on Thursday or Friday. D attends the seminar on the topic of Communications on Sunday. G attends the seminar on the topic Management or Electronics on Monday.
The final arrangement is as follows:
Day | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
Person | G | I | E | H/F | F/H | J | D |
Seminar | Management/Electronics | Electrical | I.T. | Computer | Electronics/Management | Mechanics | Communication |
1️⃣ On which day did H attend the seminar?
Answer: D — Cannot be determined
2️⃣ How many persons attend between I and D?
I is on Tuesday and D is on Sunday.
Wednesday, Thursday, Friday and Saturday lie between them.
Answer: C — More than three
3️⃣ Who attends the seminar on Management?
Management can be attended by G or H depending on the final allocation.
Answer: D — Cannot be determined
4️⃣ Who attends the seminar on Sunday?
Answer: A — D
⚡ Brain teasers are not just about getting the right answer — they train you to think differently under pressure.
Stay consistent with your daily practice, challenge your assumptions, and keep sharpening your reasoning skills.
See you in tomorrow’s challenge!