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?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 3
S is in the middle, the third place from the top, and since only S lies between P and Q, those two must be in the second and fourth places. T is just below P, so P cannot be second (the third place is taken by S); hence P is fourth and T fifth, and Q is second.
That leaves the top place for R. The order from the top is R, Q, S, P, T, so between R and T stand three books — Q, S and P.