Question
Eight boxes M, N, O, P, Q, R, S and T are kept one above
the other, such that the bottommost box is numbered as 1, the box above it is numbered as 2 and so on. How many boxes are kept between P and S? Statement I: M is four boxes above R. M is a prime numbered box. There are only three boxes between P and Q. P is above M. S is immediately above N. Statement II: At least five boxes are kept between T and Q. Q is immediately above R. Only two boxes are kept between T and M. M is above N but not immediately above N. Statement III: N is a prime numbered box below fourth box. Only three boxes are kept between N and O. S is kept three boxes below O. S is kept adjacent to M, which is above Q. The question given below consists of some statements 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 give answer .Solution
From statement I and II together, we get: 
So, there is only one box between P and S. From statement II and III together, we get: So, there is only one box between P and S. From statement I and III together, we get: So, there is only one box between P and S. Therefore, data given in any two statements together is sufficient to answer the question.
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