BRAIN TEASERS

# MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (2, 3, 10, 20, 21, 28, 48, 49, 56, 67, 73) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B-C.
#brainteasers #math #magicsquare

### ChatGPT jokes

Two ChatGPT models were talking.
One says:
"Did you hear the one about the computer that could finish sentences?
The other replies:
"Yeah, but I already knew what it was going to say."

ChatGPT goes to a restaurant and orders alphabet soup.
"Why alphabet soup?"
ChatGPT replies:
"I'm just trying to improve my vocabulary!"

How many ChatGPTs does it take to change a lightbulb?
Just one, but it will come up with 100 different ways to tell you how it's done.

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## Brain Teasers

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### John Walker

Born 29 May 1781; died 1 May 1859 at age 77.English chemist and inventor who invented friction matches. He made them from small wooden sticks which he coated with sulphur, then tipped with a mixture of potassium chlorate, antimony sulphide and a binder of gum arabic. After searching for a suitable mixture with the intent of making a useful way to start a fire, he was successful on 27 Nov 1826. Beginning on 7 Apr 1827, he sold them in boxes of 50 for a shilling, with a folded slip of sandpaper as a striking surface. He called them Congreves, to honour Sir William Congreve, known for his invention of military rockets. He declined to patent the matches, yet was still able to make a comfortable income from them.«
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