KZN Nursery Rhymes #6 – 5 Little Ducks
Wikipedia starts off by saying:
Playground songs are distinct from nursery rhymes in that they are sung by groups of children together in spontaneous play, rather than by parents or teachers to children. Playground songs lack the characters common in nursery rhymes (e.g. "Mary", "Georgie Porgie", "Jack & Jill", and "Humpty Dumpty") and often involve counting games or role playing. They are distinct from skipping or hopscotch rhymes which have a rhythm and logic of their own.[citation needed] Occasionally the songs are used as a base for modern pop songs.

FIVE LITTLE DUCKS
Went out one day
Over the hill and far away
Mother duck said
"Quack, quack, quack, quack."
But only four little ducks came back.
(Same verse for 4, 3, 2, 1)
Sad mother duck
Went out one day
Over the hill and far away
The sad mother duck said
"Quack, quack, quack."
And all of the five little ducks came back.
To find the final location for this cache, you need to know how many little ducks there were.
The final cache is at S29 46.ABC E030 46.XYZ
A = The number of Little Ducks + 2
B = The number of Little Ducks
C = The number of Little Ducks + 4
X = The number of Little Ducks - 4
Y = The number of Little Ducks – 3
Z = The number of Little Ducks + 4