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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
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 1st followed by days.
- Here there are 7 persons, then the 1st column will be persons.
- 2nd column will be days and the 3rd 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
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 |
The above is the final schedule of the doctors
QUESTION 1: From the final table, d).Neurologist
QUESTION 2: b). Ophthalmologist
QUESTION 3: c). Saturday
QUESTION 4: b). Friday
QUESTION 5: a). V
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