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There are n students in a school. If r% among the students are 12 years or younger, which of the following expressions represents the number of students who are older than 12?

Created: 5 years ago | Updated: 5 years ago

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

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