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`0.bar(67)` को `(m)/(n)` के रूप में व्यक्त कीजिए ।

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माना कि `" "x=0.bar(67)`
चूँकि यहाँ, दशमलव के बाद केवल एक अंक (अर्थात 6 ) पर बार नहीं है । इसलिए (1 ) के दोनों पक्षों में `10^(1)=10` से गुणा करने पर ,
इस प्रकार `" "10x=6.bar7=6+0.bar7=6+(7)/(9)" "` (नियम द्वारा)
`rArr" "10x=(54+7)/(9)`
`rArr" "10x=(61)/(9)" अर्थात "x=(61)/(90)" "rArr" "0.bar(67)=(61)/(90)`

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