How can we know the number is rational or irrational in form like9.999

1.	How can we know the number is rational or irrational in form like9.9999999......
Answer» Thus,33÷30=1.1Which is a rational number. In the form of p/qLet x=9.99999.….100x=99.99999...Now subtract both,100x-x=99x99.9999...-9.9999......=90.00000=99x÷90=X=33/30...

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