Read the following information carefully and answer the questions given below:
Five friends Satish, Rajesh, Rehman, Rakesh and vineet, - each presents one paper to their class on physics, Zoology, Botany, English or Geology – one day a week, Monday through Friday.
(i) Vineet does not present English and does not give his presentation on Tuesday.
(ii) Rajesh makes the Geology presentation and does not do it on Monday or Friday.
(iii) The Physics presentation is made on Thursday.
(iv) Rehman makes his presentation, which is not on English, on Wednesday.
(v) The Botany presentation is on Friday and not by Rakesh.
(vi) Satish makes his presentation on Monday.
What day is the English presentation made?
Correct Answer :
Monday
Solution :
The correct answer is Monday.
To determine the day of the English presentation, let's analyze the given information step-by-step to construct a complete schedule for all five friends, their subjects, and days (Monday through Friday).
Step 1: Record direct facts
(vi) Satish makes his presentation on Monday.
(iv) Rehman makes his presentation on Wednesday.
(iii) The Physics presentation is made on Thursday.
(v) The Botany presentation is made on Friday, and it is not presented by Rakesh.
Step 2: Determine presentation days for individuals
The remaining days for Rajesh, Rakesh, and Vineet are Tuesday, Thursday, and Friday.
(ii) Rajesh makes the Geology presentation and does not do it on Monday or Friday. Since Wednesday and Thursday are already occupied by Rehman and Physics respectively, Rajesh must present on Tuesday.
(i) Vineet does not present on Tuesday. Since Satish is on Monday, Rajesh is on Tuesday, and Rehman is on Wednesday, Vineet must present on either Thursday or Friday. Since Botany (Friday) is not by Rakesh, let's check remaining options.
Wait, Rakesh cannot do Friday (Botany is not by Rakesh). Thus, Rakesh must do Thursday (Physics).
This leaves Vineet to present on Friday (Botany).
Step 3: Map subjects to presenters and days
Now we have the schedule by day and person:
- Monday: Satish
- Tuesday: Rajesh (Geology)
- Wednesday: Rehman
- Thursday: Rakesh (Physics)
- Friday: Vineet (Botany)
Step 4: Determine the English presentation day
The remaining subjects are English and Zoology.
(iv) Rehman's presentation on Wednesday is not English.
(i) Vineet's presentation (Friday) is not English.
Since Tuesday is Geology, Thursday is Physics, Friday is Botany, and Wednesday cannot be English, the English presentation must be on Monday (presented by Satish).
Therefore, the English presentation is made on Monday.
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