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Puzzles

EXAMPLE QUESTION:

Directions (Questions 1 to 5): Study the following information carefully to answer the given questions

Seven people P, Q, R, S, T, U and V visit a polyclinic on the four days namely Tuesday, Wednesday, Friday and Saturday in a week. At least one doctor but not more than two doctors visit the polyclinic on each of these days. Each of them is specialist of different fields – ENT, Orthopedics, Pediatrics, Neurologists, Ophthalmologist, Radiologist and Oncologist. S visits on Friday with Radiologist, Pediatrician neither visit on Saturday and nor with T and V. Oncologist U visits alone on Tuesday. Q visits on Wednesday and he is not Pediatrician. R visits on Wednesday. V is not Radiologist. Pediatrician visits with ENT specialist. Neurologist visits on Friday. P is neither Orthopedics nor Radiologist.

1).What is the profession of S?

a) Ophthalmologist

b) Pediatrics

c) ENT

d) Neurologist

2).What is the specialty of P?

a) Pediatrics

b) Ophthalmologist

c) Radiologist

d) Oncologist

3).On which of the following days do the specialists in Orthopedic and Ophthalmologist visit?

a) Wednesday

b) Friday

c) Saturday

d) Tuesday

4).On which of the week does T visit?

a) Wednesday

b) Friday

c) Tuesday

d) Saturday

5).Who among the following visits the polyclinic along with P?

a) V

b) S

c) T

d) Q

GIVEN:

7 Persons – P, Q, R, S, T, U and V
7 Professions – ENT, Orthopedics, Pediatrics, Neurologists, Ophthalmologist, Radiologist and Oncologist
4 days – Tuesday, Wednesday, Friday and Saturday
1 or 2 (not more than 2) doctors visit the clinic on these 4 day

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SOLUTION:

These types of questions can be best solved by the tabulation method

If persons / days are mentioned in the question then the first column of the table will always be persons/days.
Here both persons and days are given therefore persons comes 1^st followed by days.
Here there are 7 persons, then the 1^st column will be persons.
2^nd column will be days and the 3^rd column will be medical field.

PERSON	DAYS	FIELD
P
Q
R
S	Friday	Radiologist ✗
T
U
V

CLUE 1: S visits on Friday with Radiologist

It shows that the Radiologist visits on Friday
S is not Radiologist
Maximum 2 doctors visit the clinic on each of the given days
Therefore only 3 days are remaining

CLUE 2: Oncologist U visits alone on Tuesday

So no other doctors visit on Tuesday
Now only Wednesday and Saturday are remaining
Tuesday – U – Oncologist

PERSON	DAYS	FIELD
P
Q
R
S	Friday	Radiologist ✗
T
U	Tuesday	Oncologist
V

CLUE 3: Q visits on Wednesday and he is not Pediatrician

PERSON	DAYS	FIELD
P
Q	Wednesday	Pediatrician ✗
R
S	Friday	Radiologist ✗
T
U	Tuesday	Oncologist
V

CLUE 4: R visits on Wednesday

PERSON	DAYS	FIELD
P
Q	Wednesday	Pediatrician ✗
R	Wednesday
S	Friday	Radiologist ✗
T
U	Tuesday	Oncologist
V

CLUE 5: Neurologist visits on Friday

From the clue 1, it is clear that the S and Radiologist visit on Friday
Not more than 2 doctors visit on a single day
Therefore, S is the Neurologist

PERSON	DAYS	FIELD
P
Q	Wednesday	Pediatrician ✗
R	Wednesday
S	Friday	Radiologist ✗ Neurologist ✓
T
U	Tuesday	Oncologist
V

CLUE 6: Pediatrician neither visit on Saturday and nor with T and V

We know that Pediatrician does not visit on Friday, Tuesday and Saturday
Therefore Pediatrician visits on Wednesday
Doctors Q and R visits on Wednesday and we also know that Q is not a Pediatrician
Therefore, R – Pediatrician

PERSON	DAYS	FIELD
P
Q	Wednesday
R	Wednesday	Pediatrician
S	Friday	Neurologist
T
U	Tuesday	Oncologist
V

CLUE 7: Pediatrician visits with ENT specialist

Therefore, Q is the ENT specialist who visits on Wednesday

PERSON	DAYS	FIELD
P
Q	Wednesday	ENT
R	Wednesday	Pediatrician
S	Friday	Neurologist
T
U	Tuesday	Oncologist
V

CLUE 8: V is not Radiologist

So, V will not visit on Friday
The only remaining day is Saturday
Therefore, V visits the clinic on Saturday

PERSON	DAYS	FIELD
P
Q	Wednesday	ENT
R	Wednesday	Pediatrician
S	Friday	Neurologist
T
U	Tuesday	Oncologist
V	Saturday	Radiologist ✗

CLUE 9: P is neither Orthopedics nor Radiologist

P is not Radiologist.
So he will visit the clinic on Saturday
This leaves T to be the Radiologist who visits the clinic on Friday along with S
Now P is not Orthopedics.
Therefore, P is the Ophthalmologist and V is Orthopedics

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ANSWER:

PERSON	DAYS	FIELD
P	Saturday	Ophthalmologist
Q	Wednesday	ENT
R	Wednesday	Pediatrician
S	Friday	Neurologist
T	Friday	Radiologist
U	Tuesday	Oncologist
V	Saturday	Orthopedics