Find the least value of `n` for which th sum ` 1+2 + 2^(2) +… ` to `n` terms is greater than 3000.

Find the least value of n for which the sum 1 + 3 + 3^2 +...... to n terms is greater than 7000.

The least value of n for which 1 + 2 + 2^(2) + …… to n terms is greater than 1000 is

Find the least value of n for which the sum of the series 20 + 28 + 36 +… to n terms is greater than 1000.

Find the least value of n for which the sum 1+3+3^(2)+rarr n terms is greater than 7000.

Find the least value of n for which the sum 1+3+3^2+ ton terms is greater than 7000.

The least value of n for which 1+2+2^(2)+ to n terms is greater than 1000 is

The least value of n for which 1+2 + 2^(2)+ …n terms is greater than 100 is

Find the 12th term of a series in A.P., whose sum of n terms is 4n^(2) + 3n .