Answer:
21. 3.12,3.21,3.021,3.121
22. 1.3,1.03,1.39
23. 0.09,0.012,0.0089,0.0189
24. 4.01,4.011,4.101,4.0011
25.5.5,5.05,5.059,5.0090
21.
3.021,3.12,3.121,3.21
22.
1.03,1.3,1.309,1.39
23.
0.0089,0.09,0.012,0.0189
24.
4.0011,4.01,4.011,4.101
25.
5.0090,5.05,5.059,5.5
Hope it helps you!Stay safe and goodluck on your studies!
