F5 math problems ( Arithmetic Sequence )
2007-09-14 8:52 pm
In a arithmetic sequence,T(4) + T(8) + T(12) + T(16) = 224.Find the sum of the first 19 terms of this sequence.
回答 (1)
2007-09-14 9:41 pm
參考: My Maths knowledge
收錄日期: 2021-04-18 23:18:08
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