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17. If 12th term of an A.P.is -13 and the sum of the first four terms is 24, what is the sum of

first 10 terms ?

# th

### 1 thought on “th<br />17. If 12th term of an A.P.is -13 and the sum of the first four terms is 24, what is the sum of<br />first 10 terms ?”

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I try but I don’t know the answer