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`        Find the first negative term of the sequence 999,995,991,987 Please give me answer in full description `
one year ago

User
8 Points
```							a=999, d=-4, tn=a+(n-1) d, let tn=-1, so 999+(n-1) (-4) =-1, (n-1) (-4) =-1-999, (n-1) =-1000/-4, so(n-1) =250, n=250+1=251, so n=251
```
one year ago
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