Test One Flashcards

1
Q

What does the symbol Q represent?

A

Set of all rational numbers.

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2
Q

What does the symbol Z represent?

A

Set of all integers.

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3
Q

What does the symbol R represent?

A

Set of all real numbers.

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4
Q

True or False:

Zero is an element of Z

A

T

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5
Q

True or False:

Zero is an element of R

A

T

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6
Q

True or False:

Zero is an element of R+

A

F

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7
Q

True or False:

Zero is an element of Q-

A

F

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8
Q

True or False:

π is an element of Z

A

F

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9
Q

True or False:

π is an element of Q

A

F

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10
Q

True or False:

π is an element of R

A

T

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11
Q

True or False:

10/7 is an element of Z

A

F

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12
Q

True or False:

10/7 is an element of Q

A

T

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13
Q

True or False:

10/7 is an element of R

A

T

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14
Q

True or False:

Every integer is a real number.

A

T

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15
Q

True or False:

Every real number is an integer.

A

F

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16
Q

True or False:

Every integer is a rational number.

A

T

17
Q

True or False:

Every real number is a rational number.

A

F

18
Q

True or False:

For every real number r, -r is a negative real number.

A

F