BRAIN TEASERS

# MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (7, 13, 14, 16, 22, 23, 25, 66, 67, 68, 70) 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.
The first user who solved this task is Eugenio G. F. de Kereki.
#brainteasers #math #magicsquare

### I was at my bank today waiting...

I was at my bank today waiting in a short line. There was just one lady in front of me, an Asian lady, who was trying to exchange yen for dollars. It was obvious she was a little irritated. She asked the teller, "Why it change? Yesterday, I get two hunat dolla of yen. Today I only get hunat eighty? Why it change?" The teller shrugged his shoulders and said, "Fluctuations." The Asian lady says, "Fluc you white people too!"
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### Lawn mower

In 1830, English mechanic Edwin Beard Budding (c.1796 - 1846), inventor of the lawn mover, signed a manufacturing agreement with John Ferrabee, Phoenix Iron Works, Stroud. Budding based his design on the helical cutting blades he had seen on cylinders run over newly woven cloth to cut the pile for a smooth finish. His patent (No. 5,990, 31 Aug 1830) described his mower to replace hand scythes for "cropping or shearing the vegetable surface of lawns, grass plats, and pleasure grounds." It had a cast iron frame with a large roller that turned a series of cogs which rotated the blades. Production was increased in 1832 by license to the agricultural manufacturer Ransomes. Budding also invented the adjustable spanner.«
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