Core Pure - Complex Numbers

Question 1

What are the 6 Number categories?

Answer 1

• Natural Numbers
• Rational Numbers
• Positive and Negative Integers
• Irrational Numbers
• Real Numbers
• Complex Numbers

Question 2

Which type of numbers are real?

Answer 2

• Natural
• Rational
• Integers
• Irrational

Question 3

What is a Natural Number?

Answer 3

A positive integer, such as 1, 2, or 3

Question 4

What is a Rational Number?

Answer 4

A number which can be expressed as a fraction, such as ½, ⅓, or ¼

Question 5

What is an integer?

Answer 5

A whole-valued positive or negative number, such as 1, -1, 2, -2

Question 6

What is an irrational number

Answer 6

A number which cannot be expressed as a fraction, such as √2, π, e

Question 7

What is a complex number?

Answer 7

A number in the form a + ib, where i = √-1 and a and b are real numbers

Question 8

What is an imaginary number?

Answer 8

a real number multiplied by i, where i = √-1

Question 9

What is the sign for a real number?

Answer 9

R

Question 10

What is the sign for a natural number?

Answer 10

N

Question 11

What is the sign for a rational number?

Answer 11

Q

Question 12

What is the sign for an integer?

Answer 12

Z

Question 13

What is the sign for an irrational number?

Answer 13

P

Question 14

What is 2π radians in degrees?

Answer 14

360°

Question 15

What is π radians in degrees?

Answer 15

180°

Question 16

What is π/2 radians in degrees?

Answer 16

90°

Question 17

What is π/4 radians in degrees?

Answer 17

45°

Question 18

What is π/3 radians in degrees?

Answer 18

60°

Question 19

What is π/6 radians in degrees?

Answer 19

30°