1. 240000×(1+0.015)×(1+0.015)
=240000×(1.015)²
=240000×1.030225 = 247254
2.10000×1.001²⁴+10000×1.001²³+10000×1.001²²+...+10000×1.001¹
=10000×(1.001²⁴+1.001²³+1.001²²+...+1.001¹)
=10000×[1.001(1.001²⁴-1)/(1.001-1)]
=10000×[1.001×(1.024-1)/(0.001)]
=10000×(1.001×0.024/0.001)=240240