**Q: **Is a number a mathematical object used to count? ¶

**A: **Yes, and measure, and label.

**Q: **Is a number rational? ¶

**A: **Yes.

**Q: **Are numbers those that are a solution to a polynomial equation with integer coefficients? ¶

**A: **Yes.

**Q: **Is a number either rational or irrational? ¶

**A: **Yes.

**Q: **Are numbers due to the labors of Augustin Louis Cauchy and Niels Henrik Abel? ¶

**A: **Yes, and especially the latter, who was the first to boldly use complex numbers with a success that is well known.

**Q: **Are numbers identified with the natural numbers? ¶

**A: **Yes.

**Q: **Is a number that it is an integer of the form n = 2k + 1? ¶

**A: **Yes, and where k is an integer, and an even number has the form n = 2k where k is an integer.

**Q: **Are numbers stable for all usual arithmetic operations? ¶

**A: **Yes, and including the computation of the roots of a polynomial, and thus form a real closed field that contains the real algebraic numbers.

**Q: **Are numbers discussed in the article numeral systems? ¶

**A: **Yes.

**Q: **Is a number 0, then the number is called an imaginary number or is referred to as purely imaginary? ¶

**A: **Yes, if the imaginary part is 0, then the number is a real number.

**Q: **Are numbers R, also written as? ¶

**A: **Yes, Real numbers are usually represented by using decimal numerals, in which a decimal point is placed to the right of the digit with place value 1. Each digit to the right of the decimal point has a place value one-tenth of the place value of the digit to its left.

**Q: **Is a number equal to a fraction with positive denominator? ¶

**A: **Yes.

**Q: **Is a number called a numeral? ¶

**A: **Yes.

**Q: **Are numbers written with a preceding minus sign: -123? ¶

**A: **Yes.

**Q: **Are numbers usually written with a negative sign? ¶

**A: **Yes, As an example, the negative of 7 is written −7, and 7 + = 0. When the set of negative numbers is combined with the set of natural numbers , the result is defined as the set of integers, Z also written. Here the letter Z comes from German Zahl, meaning "number". The set of integers forms a ring with the operations addition and multiplication.

**Q: **Are numbers rarely used in practice? ¶

**A: **Yes.

**Q: **Are numbers used in non-standard analysis? ¶

**A: **Yes.

**Q: **Are numbers in the Indian Sulba Sutras composed between 800 and 500 BC? ¶

**A: **Yes.

**Q: **Are numbers recognized as early as 100 BC – 50 BC in China? ¶

**A: **Yes.

**Q: **Is a number both integers? ¶

**A: **Yes, and then the number is called a Gaussian integer.

**Q: **Are numbers N? ¶

**A: **Yes, and also written , and sometimes or when it is necessary to indicate whether the set should start with 0 or 1, respectively.

**Q: **Are numbers uncountably infinite but the set of all algebraic numbers is countably infinite? ¶

**A: **Yes, and so there is an uncountably infinite number of transcendental numbers.

**Q: **Is a number defined as the class of relations consisting of all those relations that are similar to one member of the class? ¶

**A: **Yes.

**Q: **Are numbers not? ¶

**A: **Yes, and however, an algebraically closed field, because they do not include the square root of minus one.

**Q: **Are numbers not completely accepted until Caspar Wessel described the geometrical interpretation in 1799? ¶

**A: **Yes.

**Q: **Is a number an integer that is "evenly divisible" by two, that is divisible by two without remainder? ¶

**A: **Yes, an odd number is an integer that is not even.

**Q: **Is a number also a real number? ¶

**A: **Yes.

**Q: **Are numbers called irrational numbers? ¶

**A: **Yes.

**Q: **Are numbers an example of an algebraically closed field? ¶

**A: **Yes, and meaning that every polynomial with complex coefficients can be factored into linear factors.

**Q: **Are numbers written using ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9? ¶

**A: **Yes, In this base 10 system, the rightmost digit of a natural number has a place value of 1, and every other digit has a place value ten times that of the place value of the digit to its right.

**Q: **Are numbers commonly represented by rounding or truncating this sequence? ¶

**A: **Yes, and or by establishing a pattern, such as 0.333.

**Q: **Is a number the sum of two primes? ¶

**A: **Yes.

**Q: **Are numbers first established by Liouville? ¶

**A: **Yes, Hermite proved in 1873 that e is transcendental and Lindemann proved in 1882 that π is transcendental.

**Q: **Are numbers done with arithmetical operations? ¶

**A: **Yes, and the most familiar being addition, subtraction, multiplication, division, and exponentiation.

**Q: **Were numbers in use in India to represent debts? ¶

**A: **Yes.

**Q: **Is a number the sum of two primes? ¶

**A: **Yes.

**Q: **Are numbers non-computable? ¶

**A: **Yes.

**Q: **Are numbers the natural numbers : 1? ¶

**A: **Yes, and 2, 3, and so on.

**Q: **Is a number equal to zero or not? ¶

**A: **Yes.

**Q: **Is a number exactly represented by its first digits and a program for computing further digits? ¶

**A: **Yes.

**Q: **Are numbers usually attributed to Pythagoras, more specifically to the Pythagorean Hippasus of Metapontum, who produced a proof of the irrationality of the square root of 2? ¶

**A: **Yes, The story goes that Hippasus discovered irrational numbers when trying to represent the square root of 2 as a fraction.

**Q: **Is a number a number that can be expressed as a fraction with an integer numerator and a positive integer denominator? ¶

**A: **Yes.

**Q: **Is a number an integer greater than 1 that is not the product of two smaller positive integers? ¶

**A: **Yes.

**Q: **Are numbers the Riemann hypothesis? ¶

**A: **Yes, and formulated by Bernhard Riemann in 1859.

**Q: **Are numbers a subset of the complex numbers? ¶

**A: **Yes.