Members – Y, Z, U, W, Q, S, C and E
1. S is sitting at one of extreme ends.S is an immediate neighbour of Y's father.Two people are sitting between Y's son and Y's father.Q is sitting second toright of Y's son. Two people are sitting between Q and Z's brother.
Case 1:

2. W and Y's brother are sitting together.Y's brother is sitting second tol eft of Y. Y is not an immediate neighbour of Q.
Case 1:

Hence,Yis brother of Z.
3. Two people are sitting between W and Y's sister.
This is not possible in case 1. So, case 2 is correct.

Hence, W is daughter of Y and E is son of Y.
Case 2:

Hence, Q is daughter of Y and Z, Y and E are siblings.
5.Y's wife is immediate neighbour of E.
This is not possible in case 1. So, case 2 is correct.

Hence, E is Y's brother, Z is Y's sister, W is Y's wife,Q is Y's daughter and S is Y's mother.
C is younger than U.
So, V is Y's father and C is Y's son.


According to the information given, relations of Y are father, mother, sister, brother, wife, son and daughter.
6. The sum of chocolates of C and Q is equal to sum of chocolates kept by W and E. One among the four have the highest number of chocolates and one among the four have the lowest number of chocolates. C has more number of chocolates than Y but less than S.Hence, C does not have the highest number of chocolates. If we assume chocolates of C be 20 and chocolates of Q be 50 then it does not follow the condition of sum of chocolates of C and Q is equal to sum of chocolates of W and E.
Therefore sum of chocolates of W and E is 50 + 20 = 70. Sum of chocolates of C and Q is 27 + 43 = 70.
S > C > Y. So, chocolates of C is 43, S is 45 and Q is 27.
5. The difference between the chocolates of W and Z is equal to the difference between the chocolates of Q and U.
W – Z = Q – U
Chocolates of Q are 27.
Hence, U chocolates can be 33, 38 and 40.
Therefore, difference between chocolates of U and Q can be 6, 11 and 13.
Let marks of W be 20 then chocolates of T can be 33, 38 and 40.
Therefore, difference between chocolates of W and Z can be 13, 18 and 20.
Hence, chocolates of W is 20, E is 50, Z is 33 and U is 40.
Chocolates of Y is 38.
Hence, sum of chocolates of C and W is 63.