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How to find out wheather a no is rational no without doing actual division ( please fast I am having examinations )

Please answer properly I am giving 20 points for this
how much I know I have said that
more than this I do not know
i think your ques is wrong
it is how to find a decimal is terminating or non terminating



u can simply take the LCM if the answer is 2 or 5 or both 2 and 5 it means its a rational no otherwise its not
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First take LCM and if get answer as 2 or 5 or 2 and 5 then it is rational number otherwise it is not a rational number
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hope i helped plz mark as the brainliest
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