2/3是有理数吗？

在数学中，有几种不同类型的数字。这些是整数、自然数、实数、整数、复数、有理数和无理数。你知道“理性”这个词是怎么来的吗？它的名字来源于“比率”这个词。因此，有理数与比率的概念密切相关。有理数是我们在数学中仅次于整数的最普遍的数字类型之一。

什么是有理数？

有理数的形式为 p/q，其中 p 和 q 是整数，q ≠ 0。由于数字的基本结构，p/q 形式，大多数人发现很难区分分数和有理数。当一个有理数被除法时，输出是十进制形式，可以是结束也可以是重复的。 3、4、5 等是有理数的一些示例，因为它们可以用分数形式表示为 3/1、4/1 和 5/1。

什么是无理数？

不能表示为简单分数的实数称为无理数。它不能表示为像 p/q 这样的比率，其中 p 和 q 都是整数。这是有理数的不一致。在小数点之后，无理数有无限数量的非重复数字。 √2、√3、√5 等是无理数的一些例子，因为它们不能以 p/q 的形式表示。欧拉数、黄金比例、π等也是无理数的一些例子。

2/3是有理数吗？

解决方案：

Rational numbers are one of the most prevalent types of numbers that we learn in math after integers. A rational number is a sort of real number that has the form p/q where q≠0. All whole numbers, natural numbers, fractions of integers, integers, and terminating decimals are rational numbers.

When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. All rational numbers can be expressed as a fraction whose denominator is non-zero. Here, the given number, 2 ⁄ 3 is a fraction of two integers and has recurring decimal value (0.666666). Hence, it is a rational number.

类似问题

问题1：π是有理数还是无理数？

回答：

A rational number is a sort of real number that has the form p/q where q≠0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here, the given number, Pi (π) is an irrational number because it is non-terminating. The value of π is 3.14159 26535 89793 23846 264…

问题 2：1⁄3 是有理数还是无理数？

回答：

A rational number is a sort of real number that has the form p/q where q≠0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here, the given number, 1⁄3 is a fraction and has recurring digits. Hence, it is a rational number.

问题 3：3⁄4 是有理数还是无理数？

回答：

A rational number is a sort of real number that has the form p/q where q≠0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here, the given number, 3⁄4 is a fraction and has terminating digits. Hence, it is a rational number.

问题 4：9/7 是有理数还是无理数？

回答：

A rational number is a sort of real number that has the form p/q where q≠0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here, the given number, 9⁄7 is a fraction and has recurring digits. Hence, it is a rational number.