BRAIN TEASERS

# MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (2, 3, 5, 9, 10, 12, 21, 23, 24, 26, 77) 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 Djordje Timotijevic.
#brainteasers #math #magicsquare

### John went to visit his 90-year...

John went to visit his 90-year-old grandfather in a very secluded, rural area of West Virginia. After spending a great evening chatting the night away, John's grandfather prepared breakfast of bacon, eggs and toast.
However, John noticed a film like substance on his plate, and questioned his grandfather asking, "Are these plates clean?"
His grandfather replied, "They're as clean as cold water can get em. Just you go ahead and finish your meal, Sonny!"
For lunch the old man made hamburgers. Again, John was concerned about the plates as his appeared to have tiny specks around the edge that looked like dried egg and asked, "Are you sure these plates are clean?"
Without looking up the old man said, "I told you before, Sonny, those dishes are as clean as cold water can get them. Now don't you fret, I don't want to hear another word about it!"
Later that afternoon, John was on his way to a nearby town and as he was leaving, his grandfather's dog started to growl, and wouldn't let him pass.
John yelled and said, "Grandpa, your dog won't let me get to my car."
Without diverting his attention from the football game he was watching on TV, the old man shouted, "Coldwater, go lay down now, yah hear me!!!"
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### John Ray

Died 17 Jan 1705 at age 77 (born 29 Nov 1627). English naturalist and botanist who was a leader in his field during the 17th-century English and contributed significantly to progress in taxonomy, and is often referred to as the father of natural history in Britain. He toured Europe with Francis Willoughby in search of specimens of flora and fauna. Ray was the first to classify flowering plants into monocotyledons and dicotyledons. Ray established the species as the basic taxonomic unit - his enduring legacy to botany. His major work was the three-volume Historia Plantarum (1686-1704). He also attempted to classify the animal kingdom. In 1693 he published a system based on a number of structural characters, including internal anatomy, which provided a more natural classification than those being produced by his contemporaries.
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