The angles of a pentagon are in ratio 9 : 10 : 12 : 14 : 15. What is the sum of measures of the smallest and largest angles?

The angles of a pentagon are in ratio 9 : 10 : 12 : 14 : 15. What is the sum of measures of the smallest and largest angles? Correct Answer 216°

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চারটি সমানুপাতিক রাশির প্রান্তীয় রাশি দুটির গুনফল ২০০। প্রথম রাশিঃ দ্বিতীয় রাশি= ১ঃ২, দ্বিতীয় রাশিঃচতুর্থ রাশি= ১ঃ৪। তৃতীয় রাশিটি কত?
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