Mathematics Quiz

Which set includes all rational and irrational numbers?

• Whole numbers

• Integers

• Real numbers

• Natural numbers

Which number is a non-terminating, non-repeating decimal?

• 1.5

• 2/5

• Pi

• Zero point seven repeating

What is the modulus of the complex number 3-4i?

• Five

• Seven

• Twenty-five

• None of these

Which of the following is a purely imaginary number?

• 2+3i

• Zero

• 4i

• One

What is the complex conjugate of 5+2i?

• -5+2i

• 5-2i

• -5-2i

• 5+2i

Which of the following is equivalent to 1i

• Real number

• Imaginary number

• Complex number

• Zero only

The value of 1 + i²+ i⁴ + i⁶ + … + i²ⁿ is

• positive

• negative

• 0

• None of these

A matrix with only one row is called a:

• Column matrix

• Row matrix

• Square matrix

• Identity matrix

If A=5, then 3A for a 2×2 matrix is:

• 15

• 45

• 25

• 90

The matrix used to solve systems using Cramer's rule must be:

• Rectangular

• Symmetric

• Invertible

• Singular