Which country is the largest coffee growing country in the world ?
Click to view answer and detailed explanation.
Multiple Choice Question
Four persons P, Q, R, and S are to be seated in a row, all facing the same direction, but not necessarily in the same order. P and R cannot sit adjacent to each other. S should be seated to the right of Q. The number of distinct seating arrangements possible is
Explanation:
Given, that P & R cannot sit adjacent to each other and S should be seated to the right side of Q. Hence, PQRS, PQSR, RQSP, RQPS, QPRS, QRSP
To separate R & S,
Q first and S at third place = 2 ways
Q second and S at third place= 2 ways
Q second and S at fourth place= 2 ways
Total= 6 ways
