How many persons are seated between Q and T?

As per the given above question , we can see that
A, B, C, D, E, F and G, lives on each floor. A lives on fourth floor. E lives on the floor immediately below F's floor. F does not live on the second or the seventh floor. C does not live on an odd-numbered floor.
Hence , C is required answer .

From the given above question , we have
A, B, C, D, E, F and G, lives on each floor. C does not live on an odd-numbered floor. B does not live on a floor immediately above or below C's floor. D does not live on the topmost floor.
From the given table we can see that C lives immediately above D's floor , which is 6th floor .

On the basis of above given question , we can see that
A building has seven floors numbered one to seven, in such a way that the ground floor is numbered one, the floor above it number two, and so on, such that the topmost floor is numbered seven. One out of seven people viz, A, B, C, D, E, F and G, lives on each floor.G does not live on any floor below E's floor.
From above it is clear that G lives on the topmost floor , which is 7th floor .

From the information given in the question, we can have the following table:
P, Q, R, S, T and V live on different floors of the same building having six floors numbered one to six (the ground floor is numbered 1, the floor above it is numbered 2, and so on, and the topmost floor is numbered 6).
From figure it is clear that V live on the 4th floor .

According to question , we can say that
P, Q, R, S, T and V live on different floors of the same building having six floors numbered one to six .
Hence , Two floors are there between the floors on which R and T live .

As per the given above question , we have
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. D sits third to the left of A.
Clearly , D sits on the immediate left of B .

As per given question, draw a table with Member, Sports and Instrument. Write the Member , Sports and Instrument in table as per given question.
As per Question,
A plays badminton and Flute. (Write in Table as shown in below figure.)
B likes Carrom and Banjo. (Write in Table as shown in below figure.)
C plays Harmonium.
(Write in Table as shown in below figure.)
E likes to play Bridge.
(Write in Table as shown in below figure.)
F plays Guitar.
(Write in Table as shown in below figure.)
G plays Hockey.
(Write in Table as shown in below figure.)
The one who plays Hockey plays Sitar.
(Write in Table for G as shown in below figure.)
Now Only two Instrument left which are Santoor and Tabla.
E likes to play Bridge but not Harmonium or Tabla.
So E likes to play Santoor.
(Write in Table for E as shown in below figure.)
Now only one Instrument Tabla is left which will be play by D.
(Write in Table for D as shown in below figure.)
F plays Guitar but not Table Tennis or Lawn Tennis.
It means Table Tennis or Lawn Tennis play only by C Or D.
As per one more condition,
The one who plays Lawn Tennis does not play Tabla.
D Plays Tabla so Only C will play Lawn Tennis.
(Write in Table for C as shown in below figure.)
Now only 3 Sports are left which are Football, Table Tennis and Lawn Tennis.
As per one more condition,
F plays Guitar but not Table Tennis or Lawn Tennis.
Then F plays Guitar and Football.
(Write in Table for F as shown in below figure.)
So only one sport Table Tennis is left which play D.
(Write in Table as shown in below figure.)

As per given question, draw a table with Member, Sports and Instrument. Write the Member , Sports and Instrument in table as per given question.
As per Question,
A plays badminton and Flute. (Write in Table as shown in below figure.)
B likes Carrom and Banjo. (Write in Table as shown in below figure.)
C plays Harmonium.
(Write in Table as shown in below figure.)
E likes to play Bridge.
(Write in Table as shown in below figure.)
F plays Guitar.
(Write in Table as shown in below figure.)
G plays Hockey.
(Write in Table as shown in below figure.)
The one who plays Hockey plays Sitar.
(Write in Table for G as shown in below figure.)
Now Only two Instrument left which are Santoor and Tabla.
E likes to play Bridge but not Harmonium or Tabla.
So E likes to play Santoor.
(Write in Table for E as shown in below figure.)
Now only one Instrument is left which will be play by D.
(Write in Table for D as shown in below figure.)
F plays Guitar but not Table Tennis or Lawn Tennis.
It means Table Tennis or Lawn Tennis play only by C Or D.
As per one more condition,
The one who plays Lawn Tennis does not play Tabla.
D Plays Tabla so C will play only Lawn Tennis.
(Write in Table for D as shown in below figure.)

As per given question, draw a table with Member, Sports and Instrument. Write the Member , Sports and Instrument in table as per given question.
As per Question,
A plays badminton and Flute. (Write in Table as shown in below figure.)
B likes Carrom and Banjo. (Write in Table as shown in below figure.)
C plays Harmonium.
(Write in Table as shown in below figure.)
E likes to play Bridge.
(Write in Table as shown in below figure.)
F plays Guitar.
(Write in Table as shown in below figure.)
G plays Hockey.
(Write in Table as shown in below figure.)
The one who plays Hockey plays Sitar.
(Write in Table for G as shown in below figure.)
Now Only two Instrument left which are Santoor and Tabla.
E likes to play Bridge but not Harmonium or Tabla.
So E likes to play Santoor.
(Write in Table for E as shown in below figure.)
Now only one Instrument is left which will be play by D.
(Write in Table for D as shown in below figure.)
F plays Guitar but not Table Tennis or Lawn Tennis.
It means Table Tennis or Lawn Tennis play only by C Or D.
As per one more condition,
The one who plays Lawn Tennis does not play Tabla.
D Plays Tabla so C will play only Lawn Tennis.
(Write in Table for D as shown in below figure.)

As per given question, draw a table with Member, Sports and Instrument. Write the Member , Sports and Instrument in table as per given question.
As per Question,
A plays badminton and Flute. (Write in Table as shown in below figure.)
B likes Carrom and Banjo. (Write in Table as shown in below figure.)
C plays Harmonium.
(Write in Table as shown in below figure.)
E likes to play Bridge.
(Write in Table as shown in below figure.)
F plays Guitar.
(Write in Table as shown in below figure.)
G plays Hockey.
(Write in Table as shown in below figure.)
The one who plays Hockey plays Sitar.
(Write in Table for G as shown in below figure.)
Now Only two Instrument left which are Santoor and Tabla.
E likes to play Bridge but not Harmonium or Tabla.
So E likes to play Santoor.
(Write in Table for E as shown in below figure.)
Now only one Instrument is left which will be play by D.
(Write in Table for D as shown in below figure.)
F plays Guitar but not Table Tennis or Lawn Tennis.
It means Table Tennis or Lawn Tennis play only by C Or D.
As per one more condition,
The one who plays Lawn Tennis does not play Tabla.
D Plays Tabla so C will play only Lawn Tennis.
(Write in Table for D as shown in below figure.)