Convert all the scientific numbers to real numbers:
3.2 x 10^-3 = 0.0032
2.1 x 10^-3 = 0.0021
4.2 x 10^-4 = 0.00042
5.2 x 10^-2 = 0.052
5.2 x 10^-1 = 0.52
0.0021 and 0.00043 are less than 0.0032
0.052 and 0.52 are both greater than 0.0032
The answer would be: 5.2 × 10^-2 and 5.2 × 10^-1