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In a class of 78 students 41 are taking French, 22 are taking German. Of the students taking French of German, 9 are taking both courses. How many students are not enrolled in either course ?

Created: 6 years ago | Updated: 10 months ago

যদি দুইটি সন্নিহিত কোণের সমষ্টি ১৮০° হয়, তাহলে কোণ দুইটিকে পরস্পরের  সম্পূরক কোণ বলে

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