5.1 Number Systems

Question 1

Which set of numbers best describes the following?
{…-2, -1, 0, 1, 2…}

Answer 1

Integers

Question 2

What symbol is given to the set of integers?

Answer 2

ℤ

Question 3

Which set of numbers does the symbol ℝ represent?

Answer 3

Real numbers

Question 4

Is -6 an integer?

Answer 4

Yes. Integers can be negative

Question 5

What set of numbers should be used for counting?

Answer 5

Natural numbers

Question 6

To which set of numbers does π belong?

Answer 6

Irrational

Question 7

Which set of numbers contains all real world quantities?

Answer 7

Real numbers

Question 8

What type of number is used to describe the numerical positions of objects in relation to others?

Answer 8

Ordinal numbers

Question 9

What is an Array ?

Answer 9

A finite set of related elements of the same data type , where each element is individually indexed