# [thechat] Math was Mythology was comics

isaac isaac at members.evolt.org
Thu May 24 02:02:25 CDT 2001

```> Sure, but can you explain this?
> (from http://www.karplus.org/eli/puzzles/ )

> \$27, and the clerk had \$2. \$27 + \$2 =\$29, not \$30. The question
> is: where is
> the missing dollar?

it's easy - you're adding the 3 9's, and then adding the 2. you're meant to
subtract the 2 - that gives you the \$25 price of the room.

alot of people really struggle to figure it out.

dude one: spends \$10, gets \$1 - net result= -\$9
dude two: spends \$10, gets \$1 - net result= -\$9
dude three: spends \$10, gets \$1 - net result= -\$9

clerk: gets \$30 from the guys, loses \$25 to manager, returns \$3 to the guys
net result= +\$2

manager: gets \$30 from clerk, gives him \$5 to return. net result= +\$25

-9
-9
-9
----
-27

+2
+25
----
+27

-27 +27 = 0 = equilibrium.

q.e.f.d.

perhaps your blind faith makes you too trusting of the assertion that there
is a missing dollar? most people try to find the missing dollar. not many
check to see if there is a missing dollar in the first place.

isaac

```