Is 22/7 a rational number or irrational number?

My guess is that you are thinking of the approximation 22 / 7 ≈ π . The two numbers π and 22 / 7 are not equal, so there's no contradiction in one being rational and the other irrational. Sometimes you use 22 / 7 as a number "fairly close" to π , but: π = 3.14159265... while. 22 / 7 = 3. read more

A rational number is one that can be written as $\large \frac{a}{b}$ where $a$ and $b$ are integers. An irrational number is a number that is not a rational number. Since the number you sent $\large \frac{22}{7}$ is written as an integer divided by an integer it is a rational number and not an irrational number. read more

If you don't know why 22/7 is a rational number, you are not going to understand why $\pi$ is an irrational number. – Gerry Myerson Nov 26 '15 at 11:48 Welcome to the site. read more