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hongwang9703
- Senior | Next Rank: 100 Posts
- Posts: 73
- Joined: Wed Jul 22, 2009 6:46 pm
- Location: Buffalo
for all z, [z] denotes the least integer greater than or equal to z. is [x] = 0??
(1)-1 < x <-0.1
(2) [x+.5] = 1
the answer is A;
i cant even understand the explaination, but there is the jist of it:
Determining if [x]=0 is equivalent to determining if -1<x<=0. <= is smaller or equal to
This can be inferred by examining a few representative examples, such as [-1.1]=-1, [-1]=-1, [-0.9]=0, [-0.1]=0, [0]=0, and [0.1]=1.
then it goes on to explain 1 and 2.
could anyone who understands this problem explain this question is layman's term please?
(1)-1 < x <-0.1
(2) [x+.5] = 1
the answer is A;
i cant even understand the explaination, but there is the jist of it:
Determining if [x]=0 is equivalent to determining if -1<x<=0. <= is smaller or equal to
This can be inferred by examining a few representative examples, such as [-1.1]=-1, [-1]=-1, [-0.9]=0, [-0.1]=0, [0]=0, and [0.1]=1.
then it goes on to explain 1 and 2.
could anyone who understands this problem explain this question is layman's term please?
i got utterly defeated by the gmat.
