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Question

A, B, C, D, P, Q, and R are sitting around a circular table facing the centre of the table. Only two persons sit between P and Q when counted from the left of Q. D sits third to the right of A. B sits third to the left of C. D sits to the immediate right of B. R is not an immediate neighbor of B.
How many people sit between R and Q, when counted from the right of R?

The correct answer is
Four

To solve this problem, we need to position the people A, B, C, D, P, Q, and R around a circular table based on the given instructions. Let's break it down step-by-step:

  1. P and Q have two persons between them when counted from the left of Q. This means there are two possible sequences: P _ _ Q or Q _ _ P.

  2. D sits third to the right of A. In a circular arrangement, if A is seated, then the person sitting third to the right of A is D. This implies the seating sequence is: A _ _ D.

  3. B sits third to the left of C, meaning the sequence is: B _ _ C.

  4. D sits to the immediate right of B, which follows the pattern: B, D.

  5. R is not an immediate neighbor of B. This positions R at a different place not adjacent to B.

Now, let's combine these conditions to position everyone:

  • Since D is immediately to the right of B, the order becomes: B, D, A.

  • Place C third to the right of B: B, D, A, C.

  • To satisfy P _ _ Q or Q _ _ P, one viable arrangement is: C, P, _ , _, Q, B, D, A.

  • Since R cannot be adjacent to B, place R adjacent to A: A, R, C, P, _ , _, Q, B, D.

From this arrangement, the people sitting between R and Q when counted from the right of R are C, P, and the two empty slots, making a total of four people sitting between R and Q. Therefore, the answer is "Four".

Thus, Four people sit between R and Q when counted from the right of R.

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Important Questions from Seating Arrangement (Notes)

  1. Read the directions carefully and give the answer from the given options. 

    P, Q, R, S, T, K, L, M and N are sitting around a circle facing the centre. 

    K is $4^{th}$ to the right of P and P is $3^{rd}$ to the right of Q. 

    N is $4^{th}$ to the left of Q and $3^{rd}$ to the right of S. 

    R is $2^{nd}$ to the right of M and M is the immediate neighbour of P. 

    T is $2^{nd}$ to the left of L. 

    Who is to the immediate left of K?

  2. Seven people, F, J, M, L, R, V and X, are sitting in a row, facing north.
    Only three people sit to the left of X. Only M sits to the right of R. Only three people sit between R and V. J sits at some place to the left of L but at some place to the right of F.
    How many people sit to the left of V?

  3. Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order. Only A is kept above F. Only D is kept between F and C. Only E is kept below B. How many boxes are kept below C?

  4. P, Q, R, S, T, U and V are sitting in a row, facing north. No one sits to the left of U. Only four people sit between U and R. Only three people sit to the right of V. P sits to the immediate left of S. Q is not an immediate neighbour of V. How many people sit between P and T?

  5. Six people, B, C, D, I, J and K, are sitting around a circular table facing the centre. Only two people sit between B and I when counted from the right of I. K sits to the immediate left of J. I sits to the immediate right of C. Who among the following are the immediate neighbours of D?

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