Hey all i was wondering what tests to use for these series, as some of them i have no idea how to tackle, hopefully you can help me out :).

http://img33.imageshack.us/img33/7615/67912800.jpg

Pointing me in the right direction will help me greatly for my exam tomorrow!

Thanks people.

I had no idea how to attempt any of them, and my lecture notes aint helping me too. For the sin ones, would i use a comparison with 1/n? because its sin (n) ?