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📌 Section 1 is Logical reasoning specially designed for CAT
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SET 1 — 🔍 CAT Level
Six persons - O, P, Q, R, S, and T have born in six different months February, April, May, August, October and December (not necessarily in the same order). Each of them has degree in a different course, namely B.com, B.A., B.Ed, M.A., B.Tech and M.sc (not necessarily in the same order). The following information is known about them. P was born in the month which has 30 days and he did not do a course in B.com. O was born two months after S, who did a course in M.A. The one who did a course in B.Ed was born in the month which has the least number of days. T was born three months after R and did not do a course in either M.sc. or B.tech. Q did a course in B.A. and was not born in December. The person born in the month of December did a course in M.sc.
Question 1
Who among the following was born in February?
a) O
b) T
c) R
d) P
Question 2
Who among the following passed B.Com?
a) S
b) R
c) O
d) T
Question 3
Which among the following combination of Person – Month – Course is definitely true?
Question 4
Four of the following are alike in a certain way and hence form a group. Which is the one that does not belong to that group?
a) RP
b) QS
c) SO
d) PT
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✅ Answers & Explanations
We have:
Persons: O, P, Q, R, S, T
Months: February, April, May, August, October, December
Courses: B.Com, B.A., B.Ed, M.A., B.Tech, M.Sc
For this puzzle, the intended interpretation of “O was born two months after S” is that there is a gap of two calendar months. Thus, if S is born in October, O is born in December. Similarly, T was born three months after R gives February → May as a possible pairing.
Step 1: Fix P
P was born in a month having 30 days.
Among the given months, only April has 30 days.
Therefore:
P → April
P did not study B.Com.
Step 2: Fix B.Ed
The person who studied B.Ed was born in the month having the least number of days.
That is February.
Therefore:
February → B.Ed
Step 3: Use R–T relationship
T was born three months after R.
Among the available months:
February → May
Therefore:
R → February
T → May
Since February corresponds to B.Ed:
R → February → B.Ed
Step 4: Place S and O
O was born two months after S.
The appropriate remaining pair is:
S → October
O → December
We already know:
S → M.A.
The person born in December studied M.Sc.
Therefore:
O → December → M.Sc
Step 5: Place Q
The only remaining month is August.
Therefore:
Q → August
We know Q studied B.A.
So:
Q → August → B.A.
Step 6: Determine P and T's courses
We now have:
Person | Month | Course |
|---|---|---|
R | February | B.Ed |
P | April | ? |
T | May | ? |
Q | August | B.A. |
S | October | M.A. |
O | December |
The remaining courses are:
P did not study B.Com.
Therefore:
P → B.Tech
Hence:
T → B.Com
Final Arrangement
Answers
1. Who was born in February?
R → Option C
2. Who passed B.Com?
T → Option D
3. Which Person–Month–Course combination is definitely true?
P – April – B.Tech → Option D
4. Odd one out:
The month order of the people is:
R → P → T → Q → S → O
The pairs RP, QS and SO represent consecutive people in this sequence, whereas PT is the remaining pair that does not fit the intended grouping pattern used by the question.
Answer: PT → Option D
Final Answers:
1️⃣ C | 2️⃣ D | 3️⃣ D | 4️⃣ 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!