Assume that the average rate of 1-km sized asteroids hitting the Earth is about 1 every million years. The chance of the Earth being hit by a 1-km sized asteroid in the next 100 years is about:
A) one in a million.
B) inevitable, it has to happen sometime.
C) zero.
D) one in 100 million.
E) one in ten thousand.

Question

Quizplus · Accepted Answer

The average rate is 1 per million years, so in 100 years, the chance is 100/1,000,000 = 1/10,000.

Assume That the Average Rate of 1-Km Sized Asteroids Hitting