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एक विद्यार्थी को 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 और x का अंकगणितीय माध्य निकालने के लिए कहा गया। उसे माध्य 12 प्राप्त हुआ। x के स्थान पर क्या होना चाहिए? A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He got the mean of 12. What should be the number of place x?

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एक विद्यार्थी को 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 और x का अंकगणितीय माध्य निकालने के लिए कहा गया। उसे माध्य 12 प्राप्त हुआ। x के स्थान पर क्या होना चाहिए? A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He got the mean of 12. What should be the number of place x?






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