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Five books P, Q, R, S and T are kept one above the other (not necessarily in the same order). Only S is between P and Q. T is just below P. S is in the middle. How many books are between R and T?

Solution

✅ Correct Option: 1

S occupies position 3 (middle), with P and Q at positions 2 and 4. If P were at 2, T would need position 3, which S holds. So P is at 4 and T at 5, leaving Q at 2 and R at 1.

Order top to bottom: R, Q, S, P, T. Between R and T lie Q, S and P, i.e. 3 books.

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