Multiple Choice
If the communication lifetime of civilizations in our galaxy is 10,000 years and our galaxy is 13 billion years old, what is the chance of us detecting another intelligent civilization now?
A) 1 in 13,000
B) 1 in 1,300,000
C) 1 in 1300
D) 1 in 130,000
Correct Answer:
Verified
Correct Answer:
Verified
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