In a particular container urn there are only blue balls, whereas in the other there are only yellow balls and orange balls. Therefore, anyone who draws from these containers balls of three different colors must have drawn from both.
Among the following, which most closely parallels the premises above?
(A) In Ward A there are only Democrats, and in Ward B only Democrats and Republicans. Therefore, only Democrats can win in both Wards.
(B) In order to meet Joe you have to go to Danbury, while to meet George you must go either to Singapore or to Berlin. Hence, in case you don’t go to all three places you can’t be sure you will meet both Joe and George.
(C) In case Joe is late his wife will be angry, while if George or Alan is late the hostess will be angry. Therefore, if either the hostess or Joe’s wife isn’t angry, at most two of the three men (George, Joe, Alan) are late.
(D) In this container there are no blue balls, while in that one there are only blue balls. Therefore, anyone who draws from both urns will get some blue balls.
(E) It always rains on Monday. On Tuesday it always hails or snows. Therefore, if during those days we had rain, hail and snow, we never had all three types of weather on the same day.
There is a hypothesis that much of the matter in the universe is dark or unseen. Astronomical studies reveal that galaxies in many galaxy clusters are moving faster with reference to one another than they would in case visible stars were constituting all their mass. This suggests that the movement of the galaxies are influenced by the gravitational influence of some unseen mass.
Which among the following assumptions underlies the above passage?
(A) The measurements of the speed of moving galaxies is extremely unreliable.
(B) How gravitational forces work is yet not properly understood.
(C) The total mass of the visible stars in the galaxies mentioned above can be estimated with some confidence.
(D) The general composition of unseen matter in the universe has been determined.
(E) All the galaxies mentioned in the premises move towards one another.
Quite a few geologists are of the view that the trail of volcanic craters and cinder cones along the Snake River plain of southern Idaho, was the result of the westward sliding of the North American continent. The continent slid over a stationary "plume" or a vertical channel through which molten rock rose intermittently from the Earth’s crore to burst through its crust.
Among the following, which if true, will support the theory of the geologists as to how the trail was produced?
(A) Along the eastern trail the largest craters and cinder cones are located.
(B) It was along the western margin that the most violent volcanic activity apparently occurred.
(C) Throughout the trail craters and cinder cones are evenly spaced.
(D) The cinder cones and craters along the eastern margin of the trail are the most new.
(E) The formation of craters and cinder cones was swifter on the eastern margin than on the western margin of the trail.
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