Chemical Kinetics: JEE Main 2025 Chemistry question

For the reaction A $\rightarrow$ products. [Graph: $t_{1/2}$/min versus $[\mathrm{A}]_0$/mol L$^{-1}$ is a straight line through the origin with slope $= 76.92$ (appropriate units).] The concentration of A at 10 minutes is ______ $\times 10^{-3}$ mol L$^{-1}$ (nearest integer). The reaction was started with 2.5 mol L$^{-1}$ of A.