Teaching DSSSB TGT Mock Test 2025 Mathematics Sequences and Series Arithmetic Progressions

\(\rm \left(3-\frac{1}{n}\right)+\rm \left(3-\frac{2}{n}\right)+\rm \left(3-\frac{3}{n}\right)+...\)upto n terms is

1
\(\rm \frac{1}{2}(3n-1)\)
2
\(\rm \frac{1}{2}(3n+1)\)
3
\(\rm \frac{1}{2}(5n-1)\)
4
\(\rm \frac{1}{2}(5n+1)\)
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