Mathematics

Mathematics

Problem

For a random experiment, events

A

and

B

satisfy

P(A)=0.4

,

P(B)=0.3

and

P(A\cup B)=0.7

. Which of the following must be true about

A

and

B

? a)

A

and

B

are independent. b)

A

and

B

are mutually exclusive. c)

A

and

B

are complementary. d)

A

and

B

are equally likely.

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