Quasars All Have Great Distances

question 4

Multiple Choice

Quasars all have great distances.Why are there no nearby quasars?

• A)No quasars have existed in the recent past
• B)Quasars avoid spiral galaxies
• C)Quasars are found only in clusters of galaxies
• D)If quasars are too close to us,they look like pulsars

Understand the concept of complementary events and their probability sum.

Apply the addition and multiplication laws of probability.

Compute probabilities using the classical, relative frequency, and subjective methods.

Determine the probability of conjunction and disjunction of events.

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