1.Ans 
3litre 5litre
-----  ------
0      5
3      2
0      2
2      0
2      5
3      4


2.Ans 
24 13 11 5
----------
24  0  0 0 
11 13  0 0 
 6 13  0 5
 6  2 11 5
 8  0 11 5
 8  5 11 0
 8 13  3 0
 8  8  3 5
 8  8  8 0



3.Ans 
Basket 1    Basket 2
---------------------
Stone up    Prince down
King down   Prince up
nothing up  Stone down
Queen down  Stone and King up
nothing up  Stone down
Prince down Stone up
nothing up  Stone down
King down   Prince up
Stone up    Prince down

3.a)Weigh 3 against 3.


3.b).Ans: Weigh 9 against 9, then 3 against 3. 


4.Ans 
MAN AND HEN ->
<- MAN 
MAN AND FOX ->
<- MAN AND HEN
MAN AND CORN ->
<- MAN 
MAN AND HEN ->



5.Ans 
CANNIBAL and MISSIONARY ->
<- MISSIONARY
CANNIBAL and CANNIBAL ->
<- CANNIBAL
MISSIONARY and MISSIONARY ->
<- CANNIBAL and MISSIONARY
MISSIONARY and MISSIONARY ->
<- CANNIBAL
CANNIBAL and CANNIBAL ->
<- CANNIBAL
CANNIBAL and CANNIBAL ->


6.Ans 
BOY and BOY ->
<- BOY
MAN ->
<- BOY
BOY and BOY ->
<- BOY
MAN ->
<- BOY
BOY and BOY ->



7.Ans: 10 

8.Ans: If the white mouse is 1st in the counting order, the cat should start at the 7th mouse : hint - start anywhere, see how far out you are, then make the necessary correction 


9.Ans: 1 4 5 7 8 9 14 15 16 17 


10.Ans: 1 2 3 4 10 11 13 14 15 17 20 21 25 28 29 


11.Ans: 9567+1085 = 10652 


12.Ans: 289+764 = 1053 


13.Ans:927 - 346 = 581 


14.Ans: 285x39 

15.Ans: 775x33 


16.Ans: 490+407+107=1004 


17.Ans: 4712 


18.Ans: 920+977+547+9876=12320 


19.Ans: 4027+4027+5057+797275