Question
Seven boxes viz. S, T, U, V, W, X and Y are kept one
above other in the form of stack. How many boxes are kept above box W? I. Only two boxes are kept between box T and box X. Only three boxes are kept above box V. Box T and V are kept together. Only one box is kept between box W and box Y. Box S is neither kept at bottom nor adjacent to box T. II. Box U is kept second from top. Box W is kept at any place above box Y. Only three boxes are kept between box X and box U. Box V, which is neither kept adjacent to box U nor box X, which is kept at s gap of two box from S. Box T doesn’t kept adjacent to box X but kept at any place below box S. Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question:Solution
From I: We have:  Only three boxes are kept above box V. Box T and V are kept together. Only two boxes are kept between box T and box X Only one box is kept between box W and box Y. Box S is neither kept at bottom nor adjacent to box T, that means box S is kept at top and box X is kept below box T. Based on above given information we have:  Clearly, we don’t know exact position of box W. Hence, statement I is not sufficient. From II: We have:  Box U is kept second from top. Only three boxes are kept between box X and box U, that means box X is kept second from bottom. Box V, which is neither kept adjacent to box U nor box X, which is kept at s gap of two box from S, that means box V is kept fourth from bottom. Box T doesn’t kept adjacent to box X but kept at any place below box S, that means box S is kept at top.  Box W is kept at any place above box Y, that means box Y is kept at bottom.
 Clearly, we don’t know exact position of box W. Hence, statement I is not sufficient. From II: We have:  Box U is kept second from top. Only three boxes are kept between box X and box U, that means box X is kept second from bottom. Box V, which is neither kept adjacent to box U nor box X, which is kept at s gap of two box from S, that means box V is kept fourth from bottom. Box T doesn’t kept adjacent to box X but kept at any place below box S, that means box S is kept at top.  Box W is kept at any place above box Y, that means box Y is kept at bottom.  Clearly, only four boxes are kept above box W. Hence, statement II alone is sufficient.
 Clearly, only four boxes are kept above box W. Hence, statement II alone is sufficient.
- Bacterial artificial chromosome may be used for the construction of: 
- Given below are two statements: - Statement I: The transpiration, water is loss from aerial parts of plants in the form of invisible water vapours.... 
- The inflorescence of barley is:Â 
- The double zero type variety belongs to 
- Which of the following is not considered as green house gas? 
- Gypsum is recommended in cultivation of: 
- The use of synthetic pyrethroids has caused serious outbreaks of 
- Frame-shift mutation is caused by: 
- Which of the following is a true bulb used in floriculture? 
- Which of the following is not correct about CRD design?