Mike Madden:
It's not as simple as that. For a start, do we know it is the bulb that has gone? Is the power supply OK? Do we have another bulb, is it the valid type, do we want to consider using a clear one for example? Was it bright enough? We might need a higher wattage. Do we have to buy the light bulb from a non- Mensan who has somehow got the contract to supply lightbulbs at inflated prices? Can the bulb be reached; even if it can: is there any convoluted way of doing it? Has anyone considered the wider ramifications of changing the bulb? Is there a formula? Has the new bulb been lost yet, or has anyone stood on it? Do we have a Blokey, currently resident in Yankeeland shouting obscenities from the back? Is the bar open? .......Errr, what was it you asked again? Something to do with light bulbs?

John Adams:
a)None - we must wait for the BMC to appoint a committee to study the rights of the luminescentally- challenged.
b)None - it's not a Mensa problem, call your PM. 100,000 - until we have unanimous consent we must sit in the dark.

Mark Graves:
a)Twenty, one to do it, and the other 95% to only read about it in the magazine.
b)Sixteen, one electrician to change the bulb, and fifteen BMC members to tell him the right way to do it.
c)Sod the lightbulb, lets drink in the dark!
d)Intelligent people don't change lightbulbs, it doesn't have any intellectual challenge.
e)Are we talking about a "normal" light bulb, or Sir Clive's latest hyper- miniaturised version.......
f)None, Mensa doesn't have a Lightbulb SIG.
g)Twelve, one to raise the motion, one to second it, and ten supporters (all of whom must have changed no more than three light bulbs this year).
h)Two, one to change it, and one with Internet access to mail the sordid details to everyone they know.
i)One, any more in one place would constitute a Mensa Event and need advertising two months in advance.

Chris Rhodes:
One to change the lightbulb. Two to complain that the old one was unfairly dismissed. Two more to object to the new one because they don't like its politics and because it was rude to them at an AG five years ago. Another five to form a protest group about the person who changed it and circulate hate mail about them. One to write a snotty letter for Tribune about the poor quality of lightbulbs. Three more to argue on the List about whether candle power is better. Finally, one to write a motion expressing a vote of no confidence in the Lighting Sub- Committee. Answer = 15

Bronagh Miskelly:
According to the Articles of Association, a number between 1 and 9, in rotation of groups of three assuming no one's left the meeting taking the ladder with them.

John Thorp:
What's a lightbulb?

Colin Zealley:
None - they're so bright you don't need another bulb.

Derek Trillo:
a)None, we like being in the dark - take that however tickles your fancy!
b)12 - one to propose, ten to second the motion of changing, and one party sigger to connect the socket to the flashing christmas-tree lights to start the disco.

Peter Boswell:
By change a light bulb do you mean:- i). Replace dirty/wet coverings, ii). Change outer appearance and if so do you mean shape, colour or brightness, iii). Adjust the fittings for left/right hand thread, large/small eliptical screw or baynet, iv). Convert it to the path of Darkness and Evil, v). Change its state i.e. turn it on or off - I have assumed this is an electrical bulb and not a flower Bulb. Given that it is electrical how bright is it? If it was bright enough to qualify for Mensa would I have to include it in my calculation... In order to get a sensible answer you will have to be more specific with your question. I would then suggest forming a committee to discuss ALL the options ASAP. By the time they agree on a compromise it should be summer when the days are longer and the need for a light bulb might be obviated. (Never rush into a job you can delegate then blame somebody else when it doesn't get done.[Old BMC ruling]) A full and detailed (BMC type) answer to your question as per motion x. Feel free to come back to me at any time if I can be of further assistance. ( We are elected to serve [BMC motto circa 2008]).

And these were filched from various sources:
a)None. The bulb isn't bright enough.
b)None. The dim bulbs aren't "changed," they are humanely euthanized.
c)Eleven philosophers to ponder whether it is possible to actually do anything; ten semanticists to debate the various possible meanings of each phrase, word, and syllable; nine columnists to write about it from radically different viewpoints; eight letter writers to respond vehemently with opposing points of view; seven Quibblers who delight in pointing out others' mistakes (what is said is not as important as saying it correctly); six conservatives who believe things should stay the way they are; five liberals who believe that action should be taken immediately to form a committee to study possible actions; four ornery SOBs who disagree on principal with anything anyone else has suggested; three peacemakers who believe it's more important to work it out without showing any more emotions than necessary to get it done; two statisticians who maintain that numbers are more important than facts; and one pragmatist to ignore the BS and replace the bad bulb with a good one. Whilst all this is going on, all the Mensans are keeping count in their heads just to make absolutely sure that it really does add up to 66.