Study the following information carefully and answer the given questions: c o Seven boxes R, S, T, U, V, W and X contains seven different colour of balls viz. Blue, Green, Red, Black, White, Grey and Yellow. Each box is placed one above each other. e e Four boxes are between box R and the box which contains Blue colour ball. The box which contains Green colour ball is immediately below the box which contains Blue colour ball. Two boxes are between box U and the one which contains Blue colour ball. Box W is immediately below box U. Box S is placed immediately below the one which contains Grey colour ball. Two boxes are between the one which contains Green colour ball and the one which contains White colour ball. Box V contains Red colour ball. The box which contains Yellow colour ball is placed immediately below box R. Two boxes are between the one which contains Red colour ball and the one which contains Grey colour ball. Box X is placed above box T. How many boxes are between box V and box S?

Explanation

We will have three cases: Case 1. If box R is at place no. 7, then the box which contains Blue colour ball is at place no. 2. The box which contains Green colour ball is at place no. 1. Box U is at place no. 5. Box W is at place no. 4. The box which contains White colour ball is at place no. 4. e e The box which contains Yellow colour ball is at place no. 6. We know that V likes Red colour ball and only place left for it is place no. 3. This case will get discarded as there is no place left for the one which contains Grey colour ball. w w Case 2. If box R is at place no. 2, then the box which contains Blue colour ball is at place no. 7. The box which contains Green colour ball is at place no. 6. Box U is at place no. 4. Box W is at place no. 3. The box which contains White colour ball is at place no. 3. The box which contains Yellow colour ball is at place no. 1. We know that box V likes Red colour ball and only place left for it is place no. 5 and the one which contains Grey colour ball is at place no. 2. Only colour of ball left for place no. 4 is Black. Box S is at place no. 1. Box X and T will be at place no. 7 and 6 respectively.