Four of the following five are alike in a certain way based on the given arrangement and thus form a group. Which is the one that does not belong to that group?

On the basis of above given question , we can say that The floor number of every person is written by increasing 1 in their actual floor number but that of Q it is written by decreasing 1.Hence , Q is correct answer .

From the given above question , we can say that
In row 1, P, Q, R, S and T are seated and all of them are facing south. In row 2, A, B, C, D and E are seated and all of them are facing north.
In all other, the second is the neighbour of the one facing the first.R and A is the one that does not belong to that group .

As per the given above question , we can see that
In row 1, P, Q, R, S and T are seated and all of them are facing south. In row 2, A, B, C, D and E are seated and all of them are facing north.
Four of the following five are alike in a certain way and thus form a group. All others are sitting at the ends .

From the given information: Date for competition from 19th October to 26th October (From Wednesday to Wednesday)
From (v), no competition was held on 20th and 23rd (i.e on Thursday & Sunday) From (vi), Street play was held on 24th.
From (iii) and (vii), Debate must have been held on 22nd, Flash-P on 21st and Group song on 25th.
From (ii), Rock-band was held on 19th.
Hence , Debate competition exactly precedes the street play competition .

From the given information: Date for competition from 19th October to 26th October (From Wednesday to Wednesday)
From (v), no competition was held on 20th and 23rd (i.e on Thursday & Sunday) From (vi), Street play was held on 24th.
From (iii) and (vii), Debate must have been held on 22nd, Flash-P on 21st and Group song on 25th.
From (ii), Rock-band was held on 19th.
Hence , Rock band competition is required answer .

_ > _ > _ > _ C > A, E ...........(i)
B > D > _ > _ > _ > _ ...........(ii)
Since E did not score the least, we get B > D > F (81) > C > E (62) > A
is the correct answer; B's score is maximum according to above sequence. F has scored 81 marks. Then B's score = 81 + 13 = 94 marks and D is between B and F. D is most likely to score 89 marks.

From the solution of previous questions Ajay completed tasks at 3 pm.

From the above solution E start from 2 pm.

Given takes are A, B, C, D, E (here we will assume the condition to complete the work at the earliest)
From the 1^stcondition- Task A ? from 11 am to 9 am to 11 am,
From the 2^nd condition B ? From 11 am to 12 noon (Since it has started after completion of A)
From the 3^rd condition C ? From 12 noon to 1 pm
Task D's one hour work will be done along with B.
D's second hour work will be done along with C.
Hence to commence E, D must complete 3 hrs.
Hence timing of task D ? from 11 am to 2 pm and
After this the remaining task E ? From 2 pm to 3 pm