 ## Are irrational numbers real numbers?

In mathematics, the irrational numbers are all the real numbers which are not rational numbers.

That is, irrational numbers cannot be expressed as the ratio of two integers..

## How many digits are in a Belgium phone number?

A telephone number in Belgium is a sequence of nine or ten digits dialed on a telephone to make a call on the Belgian telephone network. Belgium is under a closed telephone dialing plan, meaning that the full national number must be dialed for all calls, but it retains the trunk code, ‘0’, for all national dialling.

## What is a true number?

The real numbers include all the rational numbers, such as the integer −5 and the fraction 4/3, and all the irrational numbers, such as √2 (1.41421356…, the square root of 2, an irrational algebraic number). Included within the irrationals are the transcendental numbers, such as π (3.14159265…).

## What is special about the number 35?

In mathematics 35 is the sum of the first five triangular numbers, making it a tetrahedral number. 35 is the number of ways that three things can be selected from a set of seven unique things also known as the “combination of seven things taken three at a time”.

## Why is the number 32 special?

32 is the atomic number of the chemical element germanium (Ge), which is to say 32 is the number of protons found in the nucleus of its atom. 12.) 32 is the number of teeth in a full set of an adult human if the wisdom teeth have not been extracted. 13.)

## What is special about 34?

In mathematics 34 is the ninth distinct semiprime and has four divisors including one and itself. Its neighbors, 33 and 35, also are distinct semiprimes, having four divisors each, and 34 is the smallest number to be surrounded by numbers with the same number of divisors as it has.

## What kind of number is 33?

33 (thirty-three) is the natural number following 32 and preceding 34.

## What number is a score?

20 (twenty) is the natural number following 19 and preceding 21. A group of twenty units may also be referred to as a score.

## What is a happy number in math?

In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit.

## Is 23 a natural number?

23 (twenty-three) is the natural number following 22 and preceding 24.

## What kind of number is 30?

30 (thirty) is the natural number following 29 and preceding 31….30 (number)← 29 30 31 →← 30 31 32 33 34 35 36 37 38 39 → List of numbers — Integers ← 0 10 20 30 40 50 60 70 80 90 →CardinalthirtyOrdinal30th (thirtieth)Numeral systemtrigesimal9 more rows

## What does 42 mean in the meaning of life?

The number 42 is, in The Hitchhiker’s Guide to the Galaxy by Douglas Adams, the “Answer to the Ultimate Question of Life, the Universe, and Everything”, calculated by an enormous supercomputer named Deep Thought over a period of 7.5 million years. Unfortunately, no one knows what the question is.

## Is 32 a special number?

In mathematics 32 is the smallest number n with exactly 7 solutions to the equation φ(x) = n. It is also the sum of the totient function for the first ten integers. The fifth power of two, 32 is also a Leyland number since 24 + 42 = 32. 32 is the ninth happy number.

## Can natural numbers be negative?

Main types. ): The counting numbers {1, 2, 3, …} are commonly called natural numbers; however, other definitions include 0, so that the non-negative integers {0, 1, 2, 3, …} are also called natural numbers. Natural numbers including 0 are also called whole numbers. … They can be positive, negative, or zero.

## What are numbers called?

The numerals used when writing numbers with digits or symbols can be divided into two types that might be called the arithmetic numerals (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) and the geometric numerals (1, 10, 100, 1000, 10000 …), respectively.

## Is 38 a natural number?

38 (thirty-eight) is the natural number following 37 and preceding 39….38 (number)← 37 38 39 →← 30 31 32 33 34 35 36 37 38 39 → List of numbers — Integers ← 0 10 20 30 40 50 60 70 80 90 →Cardinalthirty-eightOrdinal38th (thirty-eighth)Factorization2 × 198 more rows