Ian, could you please help me to understand following type of DS questions?
Is X an even integer?
(1) X can be even or odd >> Insufficient
(2) X can be even or decimal
Here, I get confused. As (2) says X either Even or Decimal. Since a decimal is not an integer, the only useful information is that X is even..So the information about X being decimal is useless. Then, isn't (2) enough to answer this question? http://www.gmatclub.com/phpbb/viewtopic ... ght=#48814
is one of these type of questions ...