CA Foundation · Quantitative Aptitude · Seating Arrangements
Seven persons sit in a row facing north. P sits at the left end. Q sits third to the right of P. R sits immediately to the right of Q. How many seats lie between P and R?
There are 3 seats between P and R. P is in seat 1, Q in seat 4 and R in seat 5, so the seats strictly between P and R are seats 2, 3 and 4.
- A2
- B3Correct
- C4
- D5
Explanation
Number seats 1 to 7 from the left. P is in seat 1, Q is third to the right so seat 4, R is immediately right of Q so seat 5. Seats between seats 1 and 5 are seats 2, 3 and 4, which is 3. Answer 4 would wrongly count seat 5 itself.
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