Question
The question given below consists of 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. Read all the statements and answer the question. Seven persons P, Q, R, S, T, U and V attend on seven different days of the same week from Monday to Sunday. How many persons attend between R and S? Statement I: U attends three days before V. Only one person attends between V and T. R attends before U. V attends on Friday. P attends one day before S. Statement II: P attends before Thursday. As many persons attend before P as after V. U attends two days before S, who attends three days before T.Solution
From Statement I, U attends three days before V. Only one person attends between V and T. R attends before U. V attends on Friday. P attends one day before S. We get: Case 1: 
Case 2: 
So, from Statement I alone, we get either five or two persons attend between R and S. From Statement II, P attends before Thursday. As many persons attend before P as after V. U attends two days before S, who attends three days before T. We get: 
From statement II alone, we get either two or one person attend between R and S. From Statement I and II together, we get: 
Therefore, data given in both the statement I and II together are sufficient to answer the question.
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