Answer :

AcharyaVII
0.9 is already a rational number.
A rational number is of the form p/q were p and q are whole numbers and q≠ 0.
Here , p=9 and q=10 so the fraction stands 9/10=0.9
Ans:0.9 is itself a rational number.which is expressed as 9/10.
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sowmyasreemajj
A number is said to be a rational number when it is expressed in the form of p/q where p and q are whole numbers and q not equal to 0
 so 0.9 can be written in the form of fraction as 9/10
   so 0.9 is a rational number.

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