From a Group of Seven Finalists to a Contest, Three

question 112

Short Answer

From a group of seven finalists to a contest, three individuals are to be selected for the first and second and third places. Determine the number of possible selections.

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Definitions:

Surface Waves

Seismic waves that travel on Earth’s surface.

Subduction Zone

A region of the Earth's crust where one tectonic plate moves under another, often leading to volcanic activity and earthquakes.

Continental Crust

The thick, buoyant part of the earth's crust that forms the continents and continental shelves, distinguished from the denser oceanic crust.

Continental Collision

A geological process where two continental plates collide, leading to the formation of mountains and other geological structures.