We are given the following cash flows:
\[
\begin{array}{|c|c|c|}
\hline
\text{Year} & \text{Annual Cash Outflow} & \text{Annual Cash Inflow} \\
\hline
0 & 5,00,000 & 0 \\
1 & 0 & 0 \\
2 & 0 & 0 \\
3 & 50,000 & 1,80,000 \\
4 & 50,000 & 2,20,000 \\
5 & 50,000 & 2,90,000 \\
6 & 0 & 3,30,000 \\
\hline
\end{array}
\]
The formula to calculate the Net Present Value (NPV) is:
\[
NPV = \sum \frac{C_t}{(1+r)^t}
\]
where:
\( C_t \) = Cash flow at time \( t \)
\( r \) = Discount rate (12% or 0.12)
\( t \) = Year (0 to 6)
Now, calculating the NPV for each year:
For year 0:
\[
NPV_0 = \frac{-5,00,000}{(1 + 0.12)^0} = -5,00,000
\]
For year 1 and 2 (no inflows or outflows, so NPV is 0):
\[
NPV_1 = NPV_2 = 0
\]
For year 3:
\[
NPV_3 = \frac{1,80,000 - 50,000}{(1 + 0.12)^3} = \frac{1,30,000}{1.40493} \approx 92,601.12
\]
For year 4:
\[
NPV_4 = \frac{2,20,000 - 50,000}{(1 + 0.12)^4} = \frac{1,70,000}{1.57352} \approx 1,08,604.92
\]
For year 5:
\[
NPV_5 = \frac{2,90,000 - 50,000}{(1 + 0.12)^5} = \frac{2,40,000}{1.76234} \approx 1,36,466.45
\]
For year 6:
\[
NPV_6 = \frac{3,30,000}{(1 + 0.12)^6} = \frac{3,30,000}{1.97382} \approx 1,67,212.61
\]
Adding these values together to get the total NPV:
\[
NPV = -5,00,000 + 0 + 0 + 92,601.12 + 1,08,604.92 + 1,36,466.45 + 1,67,212.61 = 3,80,884.10
\]
Thus, the Net Present Value (NPV) of the project is approximately:
\[
\boxed{3800.00 \text{ to } 5020.00 \text{ INR}}.
\]