Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test 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
More than one of the above
5
None of the above