A 24-year-old African-American man comes to the emergency room 3 hr after the onset of severe back and chest pain. These problems started while he was skiing. He lives in Los Angeles and had a previous episode of these symptoms 5 years ago while visiting Wyoming. He is in obvious pain. Laboratory studies show the following:

Hemoglobin                                        11 gm/dl

Leukocyte count                                 22,000/μl3

Reticulocyte count                              25%

What is the diagnosis of this patient?

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#Question id: 7536

#General Aptitude

Two stations A and B are 220km apart on a straight line. One train starts from A at 7 am and travels towards B at 20km/hr speed. Another train starts from B at 10 am and travels toward A at a speed of 20 km/hr. At what time they will meet?

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#Question id: 7537

#General Aptitude

A train 220m long passed a pole in 20 seconds. How long it will take to pass a platform 550m long?

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#Question id: 7538

#General Aptitude

Two trains of equal length are running on parallel lines in the same direction at 57km/hr and 39km/hr. The faster train passes the slower train in 20sec. The length of each train is?

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#Question id: 7539

#General Aptitude

A person standing on a platform of length 300 meters observed that a train takes 15 seconds to pass him, passed completely through the platform in 40 seconds. Them the length of the train (in meters) is

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#Question id: 7540

#General Aptitude

Two trains of lengths 200m and 320m pass each other with constant speeds on parallel tracks in opposite directions. The drivers and guards are at extremities of the trains. The time gap between the drives passing each other and first driver-guard pair passing each other is 25 s. How much later will other driver-guard pair pass by?

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#Question id: 7541

#General Aptitude

A train travelling at 54km/hr completely crosses another train having half its length and travelling in opposite direction in 18km/hr in 30 second. It also passes a railway platform in 40 seconds. The length of the platform (in meters) is