There are 5 cats on a boat, and 1 jumps off. How many are left?
Zero, they were copycats.
How many animals can jump higher than a skyscraper? -- All of them, skyscrapers can't jump.
"Chuck? How many push-ups can you do?" -- "All of them."
How many programmers does it take to change a light bulb?
None, that's a hardware problem.