2. !! !! !!
! "! "
# !# !
$$ %% && %%
'!'!
(( !! !! ))
! %! % ** ++
,, !! # -.-,# -.-,

3. "" +/0+/0 " "" " 11 !! !!
% !% !
22 " 1" 1
"" +/0+/0
3*03*0 11
!! 22 !!
"" !!
22 #4#4

4. 55 !! 66 !%!% 77
55 !!
$$ 55
(( 55 #4#4
,, 55
88 55 !! !!

5. !! !! !!
!! ! "! " 61 % 7 %61 % 7 %
!! !! ""
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! 7! 7
!! 11 +/0+/0

7. 3 6 3 73 6 3 7 "" !!
"" ! 1! 1
!! " %" % !!
9 11 6 9 79 11 6 9 7 "" !!
"" !!
!! !!
$$ / + 6/+7/ + 6/+7 !!
"" ""
(( # % 6# 7 !# % 6# 7 !
""

8. !!"" !!
3 " /+3 " /+
/ 3 ! "/ 3 ! "
$ ! 1 ! :3;$ ! 1 ! :3;
( 6 7 "( 6 7 "
, ; " 9, ; " 9
8 /+ "8 /+ "
< ; 6 7 ! 9 #< ; 6 7 ! 9 #
- 9 " " 1 % "- 9 " " 1 % "

9. # ! $# ! $
33 == 6/+7 > /+ 36/+7 > /+ 3
99 == 6 7 >6 7 >
! 1 3 9! 1 3 9
/+/+ == 6/+7 ? > " /+6/+7 ? > " /+
$ #$ # == 6 9 7 > 9 #6 9 7 > 9 #

10. %%
& " ! @& " ! @
! 3! 3 B 6/+7 9B 6/+7 9 BB
6 7 ! ! " %6 7 ! ! " %
! 3! 3
! "! "
&&
& 1 " !& 1 " !
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99 B 6 7 #B 6 7 # B 6 9 7 "B 6 9 7 "
&&

11. ! " "! " "
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; 1; 1
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3! " " ! 13! " " ! 1
++
!!
33 == 6# 76# 7
9 = 6 79 = 6 7
$$ ## = 6= 6 99 77

12. / ! &/ ! &
" !" !
9 & ! &9 & ! &
! "! "
1 ! " " "1 ! " " "
! ! 9 "! ! 9 "
% ! !% ! !
99 == 6/+76/+7
33 = C= C ))
/+/+ == ))
$ = 6 9 7$ = 6 9 7

13. * "* " !! "" "" 22
"" &&
// ! "! " %% !!
%% " %" % 22 %% !!
// !!
%% !! " " !" " !
!! ! "! "
!! # D 6 % ! 1 E 7# D 6 % ! 1 E 7

14. FF ! ! "! ! "
3;; G > " G !3;; G > " G !
!!
!!
33 == 6# 76# 7
9 = 6 79 = 6 7
$ = ? 6 9 7$ = ? 6 9 7
FF !! # D 6 % ! 1 E 7# D 6 % ! 1 E 7
# D G ># D G > " G " H . %" G " H . %
""
!!
33 == 6# 76# 7
9 = 6 79 = 6 7
$ 9 = 6 9 7 ?$ 9 = 6 9 7 ?
( = 6 9 7( = 6 9 7
1 6 9 7 H . /+ = 6/+7 ?1 6 9 7 H . /+ = 6/+7 ?

15. &&
!! !! 11 ""
11 22 11 !! 11
; 1 ! 1 !; 1 ! 1 !
! % !! % !
/ " !/ " !
""
+/0+/0
& ! +/0& ! +/0
$ 1$ 1 22 11