me: its a riddle and the answer is a coin
u: thx
a coin
A coin
(1,head,head),(1,head,tail),(1,tail,head),(1,tail,tail) (2,head,head), (2,head,tail),(2,tail,head),(2,tail,tail), (3,head,head), (3,head,tail),(3,tail,head),(3,tail,tail), (4,head,head), (4,head,tail),(4,tail,head),(4,tail,tail), (5,head,head), (5,head,tail),(5,tail,head),(5,tail,tail), (6,head,head), (6,head,tail),(6,tail,head),(6,tail,tail),
Head - Tail - Tail - Head
A and B is a vector by replacing the tail of the B on the head of the A and the join the tail of the A with the head of the B this method is called head to tail rule
smiles
the head to tail rule
church
nothing has only a head and a tail tadpole or coin
In addition of vector when vector A whose head is joined to the tail of the vector B and then the tail of the vector A is linked with the tail of the resultant vector and the head of the vector B is joined with the head of the resultant vector..... it means the addition of vectors are also defined the head to tail rule..
Church. CH UR CH
The head of the spermatazoan separates from the tail when it penetrates the ovum.
the head to tail rule