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The sum of three numbers is 138. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 7, then the second number is.
গণিত অনুপাত-সমানুপাত 05 Oct, 2018
প্রশ্ন The sum of three numbers is 138. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 7, then the second number is.
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45
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