# What numbers are complex numbers

• ## How do you identify complex numbers?

Complex numbers are numbers of the form a+bi, where a and b are real. 0 is real, and 0=0+0i, so 0 is a complex number..

• ## Is 4 a complex number?

Since real numbers is a subset of complex numbers therefore we can say that four is also a complex number.
The four can be written as 4+0i..

• ## Is 7 a complex number?

For any complex number z = a + ib if a ≠ 0 & b = 0, then the complex number is called a purely real number i.e., a number with no imaginary part.
All the real numbers are examples of this such that 2, 3, 5, 7, etc.Jun 7, 2023.

• ## What set of numbers are complex numbers?

Complex numbers.
The set C of complex numbers is defined to be the set of z = x + iy where x and y are real numbers (i.e., x, y ∈ R).
For such z = x + iy we say that x is the real part and y is the imaginary part, and we write x = Re(z), y = Im(z)..

• ## Why are all numbers complex numbers?

Because either part could be 0, technically any real number or imaginary number can be considered a complex number.
Complex does not mean complicated; it means that the two types of numbers combine to form a complex, like a housing complex — a group of buildings joined together..

• Complex numbers.
The set C of complex numbers is defined to be the set of z = x + iy where x and y are real numbers (i.e., x, y ∈ R).
For such z = x + iy we say that x is the real part and y is the imaginary part, and we write x = Re(z), y = Im(z).
A complex number is of the form a + ib and is usually represented by z. Here both a and b are real numbers. The value 'a' is called the real part which is denoted by Re(z), and 'b' is called the imaginary part Im(z). Also, ib is called an imaginary number.
Complex numbers are the numbers that are expressed in the form of a+ib where, a,b are real numbers and 'i' is an imaginary number called “iota”. The value of i = (√-1). For example, 2+3i is a complex number, where 2 is a real number (Re) and 3i is an imaginary number (Im).
The complex number is basically the combination of a real number and an imaginary number. The complex number is in the form of a+ib, where a = real number and ib = imaginary number. Also, a,b belongs to real numbers and i = √-1.

Mathematical sequences

Crime organization in South Africa

The Numbers Gang is a crime organization that started as a prison gang with one of the most fearsome reputations in South Africa.
Although they were founded in KwaZulu-Natal, it is believed that they are present in most South African prisons.
The gang is divided into groups or camps named the 26s, 27s and 28s or the other non gang members called 'Frans' partially meaning no number.
The tyranny of numbers was a problem faced in the 1960s by computer engineers.
Engineers were unable to increase the performance of their designs due to the huge number of components involved.
In theory, every component needed to be wired to every other component and were typically strung and soldered by hand.
In order to improve performance, more components would be needed, and it seemed that future designs would consist almost entirely of wiring.

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