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GMAT Quant — Probability & Combinations

Suppose the probability that a randomly selected email is classified as spam is s . What is the probability that the email is not classified as spam?

Explanation	Calculations	Help
$We apply Inverse Probability Rule to relate the probability of an event and the probability of its complement$	$P (not classified as spam) = 1 - P (classified as spam)$	Theory & Tactics Method Card PC1-E Click to view full details
$We substitute s for P (classified as spam) to find the complement probability$	$P (not classified as spam) = 1 - s$

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A

GMAT Quant — Probability & Combinations

Suppose the probability that a randomly selected email is classified as spam is s . What is the probability that the email is not classified as spam?

Explanation	Calculations	Help
$We apply Inverse Probability Rule to relate the probability of an event and the probability of its complement$	$P (not classified as spam) = 1 - P (classified as spam)$	Theory & Tactics Method Card PC1-E Click to view full details
$We substitute s for P (classified as spam) to find the complement probability$	$P (not classified as spam) = 1 - s$

Scroll horizontally to view all columns

A