1 . Answer: (c)
2 . Answer: (a)
3 . Solution (a)
4 . Solution (c)
5 . Solution (c)
6 . Solution (a)
7 . Solution (a)
8 . Solution (b)
9 . Solution (c)
10 . Solution (b)
1 . Answer: (c)
2 . Answer: (a)
3 . Solution (a)
4 . Solution (c)
5 . Solution (c)
6 . Solution (a)
7 . Solution (a)
8 . Solution (b)
9 . Solution (c)
10 . Solution (b)