thuyduongbk1903 thuyduongbk1903

21-06-2021
Mathematics

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The 11th term of an progression is 25 and the sum of the first 4 terms is 49. The nth term of the progression is 49
1. Find the first term of the progression and the common difference
2. Find the value of n

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nchangcomfort48 nchangcomfort48

21-06-2021

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