https://hindimejankariya.com/rational-and-irrational-number-hindi-%e0%a4%aa%e0%a4%b0%e0%a4%bf%e0%a4%ae%e0%a5%87%e0%a4%af-%e0%a4%94%e0%a4%b0-%e0%a4%85%e0%a4%aa%e0%a4%b0%e0%a4%bf%e0%a4%ae%e0%a5%87%e0%a4%af-%e0%a4%b8%e0%a4%82/