Short Quiz

Question 1 of 5

The interval \(\{x: x \in R,-4<x \leq 6\}\) is written as:

A \([-4,6]\) B \((-4,6)\) C \((-4,6]\) D \([-4,6)\)

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Question 2 of 5

Which of the following is an empty set?

A Set of even prime numbers B \(\left\{x: x^2=4, x\right.\) is odd \(\}\) C Set of prime numbers less than 5 D \(\{0\}\)

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Question 3 of 5

If \(A \subset B\), then \(B^{\prime} \subset A^{\prime}\). This statement is:

A Always true B Always false C True only if \(A=B\) D True only if \(A=\) empty set

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Question 4 of 5

If \(A=\{2,4,6,8\}\) and \(B=\{6,8,10,12\}\), what is \(A \cup B\) ?

A \(\{6,8\}\) B \(\{2,4,6,8,10,12\}\) C \(\{2,4,10,12\}\) D \(\{2,4\}\)

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Question 5 of 5

Which of the following is equivalent to the closed interval \([a, b]\) ?

A \(\{x: a<x<b\}\) B \(\{x: a \leq x<b\}\) C \(\{x: a \leq x \leq b\}\) D \(\{x: a<x \leq b\}\)

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Class 6