-
MBA.Aspirant
- Master | Next Rank: 500 Posts
- Posts: 401
- Joined: Tue May 24, 2011 1:14 am
- Thanked: 37 times
- Followed by:5 members
Statement 1: |J| = J^(-1) = 1/J ----> J*|J| = 1MBA.Aspirant wrote:What is the value of integer J ?
1. |J| = J^{-1}
2. J^J = 1
If J > 0, J*|J| = J*J = 1 ----> J² = 1 ----> J = 1
If J < 0, J*|J| = J*(-J) = 1 ----> J² = -1 ----> No integer value is possible for J
Hence, only possible value of J is 1.
Sufficient
Statement 2: J^J = 1
Only possible way to express 1 as J^J, where J is an integer is 1^1.
Hence, only possible value of J is 1.
Sufficient
The correct answer is D.
