Concept teaser

$\boxed{\pi \ne \frac{22}{7}}$ . $\frac{22}{7}$ is only an approximation of $\pi$ and $\pi$ is irrational while $\frac{22}{7}$ is rational.

From Python, the value of $\pi = 3.141592653589793$ and $\frac{22}{7} = 3.142857142857143\quad \Rightarrow \pi \approx \frac{22}{7}$ .

Actually π is equal to 3.14159.... And cannot be expressed as a rational number.. But 22/7 is the nearest possible rational value say approximately equal to π and so is used by students of primary classes.