1.\:\:\log_{10}(2)+\log_{10}(5)
2.\:\:\log_{10}(2)+\log_{10}(11)+\log_{10}(7)
3.\:\:\log_{5}(4\cdot7)+\log_{5}(2)
6.\:\:\log_{10}(\frac{12}{13})+\log_{10}(13)
7.\:\:\log_{5}(6)+\log_{5}(\frac{1}{3})+\log_{5}(10)
8.\:\:\log_{10}(7)+\log_{10}(\frac{1}{7})
9.\:\:\log_{10}(30)+\log_{10}(\frac{1}{10})
10.\:\:\log_{4}(11)+\log_{4}(11-6)