Mining Engineering > GATE 2021 > Aptitude
Four persons P, Q, R and S are to be seated in a row. R should not be seated at the second position from the left end of the row. The number of distinct seating arrangements possible is
A
6
B
9
C
18
D
24

Explanation

Correct : c

Similar Questions

What is the worst-case time complexity of insertion in an AVL tree?
Question #23 Medium
Which operations on a binary search tree have O(h) complexity?
Question #31 Easy
Compare search complexities of sorted array vs balanced BST.
Question #47 Hard

Related Topics

Data Structures Binary Search Tree Time Complexity Algorithm Analysis Tree Algorithms Computer Science