Use the Permutations Formula
-A church has 9 bells in its bell tower. Before each church service 5 bells are rung in sequence. No bell is rung more than once. How many sequences are there?
A) 15,120
B) 3024
C) 126
D) 6048

Question

Quizplus · Accepted Answer

The number of sequences is calculated using the permutations formula, which is P(n, r) = n! / (n-r)!, where n is the total number of items, and r is the number of items to be arranged. Here, n=9 (bells) and r=5 (bells to be rung in sequence), so P(9, 5) = 9! / (9-5)! = 9! / 4! = 15,120.