amusing to see how things that were interesting to puzzlers many decades
ago look fresh and attractive today. Of
course, they were presented in a somewhat different manner, but
their core is still appealing to their solvers...
A man went in to a shop and asked:
"How much is 1?"
"£1.20" replied the shopkeeper.
"How much are 10?" asked the man,
"£2.40" replied the shopkeeper,
"I'll have a 100" said the man,
The shopkeeper charged him £3.60, what was the man buying?