A million grains of sand is a heap. If we remove one grain of sand from this heap, we will still have a heap.
We can now keep repeating (2) until we only have a single grain of sand remaining.
Is this a heap? Clearly not. But what went wrong with our thinking?
This is called the Sorites paradox (soros being Greek for "heap") and is a classic paradox that has no real answer.
Both (1) and (2) are true, and we can indeed keep removing one grain of sand until we have a single grain remaining. If we remove one more grain, we're left with nothing, is this still a heap?
When does the heap become a non-heap?
???
Puzzle 7
Customer services at BrainBashers headquarters received the following letter recently.
Luckily, our top puzzle solvers were able to determine the meaning and help Sam South.
Can you work out what the problem was?
D-a- K-v-n,
Reasoning
Take the third letter of the first word
+ the second letter of the second word
+ plus the first letter of the first word
+ plus the fourth letter of the second word.