bongbong wrote:
I wonder what kind of questions are yes-no data sufficiency? How can i tell if a questions is a regular data sufficiency question or yes-no data sufficiency. I cannot tell!!!
You can tell the type of a Data Sufficiency question by the information they ask before the question mark.
If the question starts the word "is", then its usually a yes/no question. You look at the question stems (1 & 2) to determine whether the answer is YES or NO. What you want is to find a situation where X is either always Yes or always No to determine sufficiency. See the example below and tell me the answer.
Example that I'm making up:
X is an integer, Is X>0?
1) X + 1 = -5
2) X = -6