Teaching DSSSB PGT Mock Test 2025 Mathematics Statistics

The mean of the series 1, 2, 4, 8...., 2n is given as: 

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