You saw a shirt worth 97 Euro. Since you don’t have cash, you
borrowed 50 from your Mom and 50 from your Dad, so you have 100
Euro. Since the shirt is 97 Euro you have 3 Euro left. You returned 1
Euro to your Mum and 1 Euro to your Dad and you left 1 Euro for
yourself. Now you owe your Mum 49 Euro and your Dad 49 Euro.
49+49+1= 99. Where is the missing Euro?
Mathematics is less related to accounting than it is to philosophy. – Leonard Adleman
I found an innocent card trick here. Scroll down till you come to the video in the image and click Play. The kids talk in Norwegian, but that shouldn’t be a problem to understand how the trick works.
The trick has been recommended by my son, age 6.
- I want to throw six Heads with this fair coin.
- Be my guest!
- How many times do I have to throw the coin?
- That depends.
- On what?
- On luck. You can throw HHHHHH in 6 throws or TTTTTTTTTTTTTTTTTTTTHHHHHH in many more throws.
- So how many times do I have to throw?
Acquaintance, n.: A person whom we know well enough to borrow from, but not well enough to lend to. - Ambrose Bierce
- How is you new job going?
- I like it a lot. I have always wanted to be near the water.
- And the pay? Is it good?
- That is why I called you. The pay is kind of a problem.
- How much are you paid per hour?
- I get:
- What do you mean?
- I am free to chose x and y and the formula gives my salary.
- I can make you very rich!
- Let x = y = a million!
- Sorry, that won’t do. x plus y has to equal 2.
- Now you are telling me!
Problem source: Department of Mathematics, University of Wisconsin.
Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress. - Alfred A Montapert
- I like to play with numbers.
- I can see that!
- Here is a rectangular array of numbers.
- How big is the rectangle?
- I have noticed that the sum of the smallest and biggest number in a row is always the same. Call it R.
- Remarkable!
- I have also noticed that the sum of the smallest and biggest number in a column is always the same. Call it C.
- Cool!
- Do you know what I have noticed?
- No.
- That R = C.
- Surely a coincidence!
Problem source: Department of Mathematics, University of Wisconsin.
When everyone is against you, it means that you are absolutely wrong– or absolutely right. - Albert Guinon