Is M < 0 ?
1. - M = | - M |
2. M^2 = 9
Hello Friends, I think mod is always positive, please help me out on this one...This question isn't tough but concept is required. I am little bit confused. Please help me. Thanks in advance.
Strong concept tested: Please help me out
This topic has expert replies
You are right mode is always positive:
Is M < 0 ?
1. - M = | - M |
2. M^2 = 9
1. - M = | - M | is true only for M=0, Hence M is not less than 0. Sufficient
2. M^2 = 9, gives you M=3,-3 hence Not Sufficient
IMO A
Is M < 0 ?
1. - M = | - M |
2. M^2 = 9
1. - M = | - M | is true only for M=0, Hence M is not less than 0. Sufficient
2. M^2 = 9, gives you M=3,-3 hence Not Sufficient
IMO A