Welcome Guest | Sign in | Register
Permutation and Combination - Discussion Page For Q.259 | Aptitude Questions and Answers | Aptitude Free Online-Tests | LucentBlackBoard | LucentBlackBoard.com

Home > Arithmetic Aptitude > Permutation and Combination > Questions and Answers Discussion

Q: Find the number of ways of studding 10 beads to form a necklace
A. 9! /2  B. 9! 
C. 9! 2! D. 10! / 2

Answer and Explanation

Answer:9! /2 

Explanation:
n beads can be strung in a necklace in (n – 1)! / 2 ways
=> Here n = 10
Required number of ways = 9! /2

Comment on this Question

Name:

Loading...




Partner Sites
LucentBlackBoard.com                  SoftLucent.com                  LucentJobs.com
All rights reserved © 2012-2015 SoftLucent.