How many elves does it take to light a candle?
Three, one to sing, one to dance, and one to summon the joyous spirit of fiery flame into the realm material.
How many dwarves does it take to light a candle?
Three, one to count the money, one to check for stone traps/sliding pannels, and one to realize that dwarves have darkvision.
How many halflings does it take to light a candle?
What, you'd actually trust a halfling with your candle?
How many gnomes does it take to light a candle?
Just one, but it only appears to be light.
How many half-elves does it take to light a candle?
Just one....apparently half elves are good at something!