Question

Six professors P, Q, R, S, T and U have to
demonstrate their subjects namely chemistry,
zoology, botany, physics, geology and maths. One
professor will demonstrate only one day.
Demonstration will start from Monday and will
end on Sunday. There will be a day of rest.
(i) Chemistry will immediately follow geology.
(ii) P, who is a mathematician, will demonstrate
either on 2nd or last day.
(iii) R will demonstrate on 3rd day, physics will
be on the 5th day.
(iv) T, who is zoologist, demonstrates on 2nd
day.
(v) Q has demonstrated on Monday and the rest
day will be immediately after U's demonstration
day.
On which of the following days no demonstration
will take place ?​

Answer 1

Step-by-step explanation:

Saturday no demonstration

Answer 2

Given :- Six professors P, Q, R, S, T and U have to demonstrate their subjects namely chemistry, zoology, botany, physics, geology and maths. One professor will demonstrate only one day. Demonstration will start from Monday and will end on Sunday. There will be a day of rest.

Solution :-

1. Chemistry will immediately follow geology. => geology - chemistry.
2. T, who is zoologist, demonstrates on 2nd
3. day. => T = Tuesday .
4. P, who is a mathematician, will demonstrate
5. either on 2nd or last day. => since T is on 2nd day , P = Maths = Sunday.
6. R will demonstrate on 3rd day. => R = wednesday .
7. physics will be on the 5th day. => Physics = Friday .
8. Q has demonstrated on Monday .=> Q = Monday.
9. Rest day will be immediately after U's demonstration day.

From diagram now , we can conclude that, no demonstration will take place on Saturday .

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