1. log2(8)=3
2.log10(1000)=3
3.log0.25(32)= -5/2
4.log6(log2(64))= 1
5. 18log7(7^1/6) = 18*1/6 =3
6.log3^1/7(3)= 7*1=7
7.18*3^(log3(4))=18*4=72
8.216^(log6(7)=6^3(log6(7))=7^3=343
9. log5(6.25)+log5(4)= log5(6.25*4) = 2
10. log8(256)-log8(0.5)=log8(256/0.5)= 3
11. log2(729) / log2(9) = log9(729) = 3
12. log9(8) / log81(8) = log8^0.5(8) = 2
13. log5(2) * log2(25) = 1/log2(5) * log2(25) = 2
14. log0.25(9) * log9(4) = 1/log9(0.25) * log9(4) = -2
15. 5^(3log5(11))=11^3=1331
16. 36^(log6(8^0.5))=6^2log6(8^0.5)=8
17. (7^(log7(2)))^log2(7)=7
18. (5^log2(7))^log5(2)=5^(log2(7) / log2(5)) = 5^log5(7) = 7
19. log1/15(225*15^(2/3)) = log1/15(15^2 * 15^(2/3)) = -8/3
20. log7/2(64/729) = -6