Math Jokes
Dollars
equal cents
Theorem:
1$ = 1c.
Proof:
And another that gives you a sense of money disappearing.
1$ = 100c
= (10c)^2
= (0.1$)^2
= 0.01$
= 1c
Here $ means dollars and c means cents. This one is scary in that I have seen
PhD's in math who were unable to see what was wrong with this one. Actually I am
crossposting this to sci.physics because I think that the latter makes a very
nice introduction to the importance of keeping track of your dimensions.
Story
about infinity
A
very large mathematical convention was held in Las Vegas. The conventioneers
filled two hotels, each with an infinite number of rooms. The hotels were across
the street from each other and were owned by brothers. One evening, while
everyone was out at a bar-b-que, one of the hotels burned to the ground. The
brothers got together and worked out a plan. In the remaining hotel, they moved
all guests to twice their room number -- room 101 moved to 202, room 1234 moved
to room 2468, etc. Then all the odd number rooms were empty, and there were an
infinite number of odd rooms. So the guests from the other hotel moved into
them.
One
equal to one half
Theorem:
1 = 1/2:
Proof:
We can re-write the infinite series 1/(1*3) + 1/(3*5) + 1/(5*7) + 1/(7*9)
+...
as 1/2((1/1 - 1/3) + (1/3 - 1/5) + (1/5 - 1/7) + (1/7 - 1/9) + ... ).
All terms after 1/1 cancel, so that the sum is 1/2.
We can also re-write the series as (1/1 - 2/3) + (2/3 - 3/5) + (3/5 - 4/7)
+ (4/7 - 5/9) + ...
All terms after 1/1 cancel, so that the sum is 1. Thus 1/2 = 1.
