Question

Do natural numbers contain negatives?

Answer 1

No.The natural numbers (ℕ) are defined in 2 ways:the counting numbers {1, 2, 3, ...};The counting numbers and zero, ie {0, 1, 2, 3, ...}Some definitions include zero, others do not. Either way, negative numbers are NOT included. The set of Integers (ℤ) is the counting numbers, their negatives and zero, ie {..., -3, -2, -1, 0, 1, 2, 3, ...}