Which set does the number -22 belong to?

Answer 1

It belongs to any set which has it as a member.

The standard sets that include it are:

• Negative integer numbers (ℤ⁻)
• Integer numbers (ℤ)
• Rational numbers (â„š)
• Real numbers (ℝ)
• Complex numbers (â„‚)

Note: ℤ⁻ ⊂ ℤ ⊂ ℚ ⊂ ℝ ⊂ ℂ

Answer 2

It belongs to any set that contains it!

It belongs to {-22},

or {-22, sqrt(2), pi, -3/7},

or {-22, bananas, France, cold}

or all whole numbers between -43 and 53,

or multiples of 2,

or composite numbers,

or integers,

or rational numbers,

or real numbers,

or complex numbers,

etc.