Free Test Prep GRE Exam Questions

SKI : SNOW 

y > 1,001 

WALK : LEGS 

If circular region A and circular region B have areas of 16π and 9π, respectively, what is the ratio of the radius of circle A to the radius of circle B?

Fatigue ranks as one of the most frequent health complaints in the United States. But despite itspervasiveness, it resists definition. Fatigue is not feeling sleepy: people report being sleepy without beingfatigued and fatigued without being sleepy. It can be physical, emotional, or mental. It can be diminished byencouragement or by financial incentives (one study showed that people promised a five-dollar reward wereable to hang from a horizontal bar for almost twice as long as control subjects or subjects who were merelyencouraged by the experimenter). It may arise from grief, illness, pain, depression, lack of sleep, or relentlesslabor. So stymied are some scientists by the elusive quality of the concept that they argue it should be dumpedaltogether.The primary purpose of the passage is to