1. 2 power 7 =128
2. 8 power 2 = 64
3. 3 power -3 = 1/27
4. Log4 (256) =4
5. Log8(512)=3
6. Log27(9)=2/3
7. Base 6 of 36 is 2
8. Base 2 of 32 is 5
9. Base 4 of 64 is 3
10. Base 3 of 81 is 4
11. Base 100 of 10 is 1/2
12. Base 7 of 1/7 is -1
13. Base 18 of 1 is 0
14. Base 2 of 1/16 is -4
15 base of 10 of 1000 is 3
16 base 16 of 8 is 3/4
17 base 243 of 27 is 3/5
18. 2log3 (2) + log3 (23)
19. Log7 (5) + 1
20. 2 + log2 (5) + log2 (13)
21. Log5 (2) +log5 (19)
Sorry it took so long :(