MAGIC SQUARE: Calculate A-B+C
[5608] MAGIC SQUARE: Calculate A-B+C - The aim is to place the some numbers from the list (7, 8, 10, 11, 14, 16, 17, 25, 27, 28) 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 - Correct Answers: 20 - The first user who solved this task is Djordje Timotijevic
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (7, 8, 10, 11, 14, 16, 17, 25, 27, 28) 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.
Correct answers: 20
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #magicsquare
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Sibling lessons

Charlie was playing with his little brother Mickey when the little boy asked whether he could fly like Superman.

"Sure you can, Mickey," Charlie said, "Just flap your arms really *really* hard."

So Mickey climbed up on the windowsill, started flapping like mad, jumped, then smashed into the ground two stories below.

Horrified, their mother came screaming into the room and said, "What the heck happened?!?"

Charlie said, "I was just teaching Mickey not to believe everything someone tells him."

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Collapsible tube patent

In 1841, the first U.S. patent for collapsible metal tubes was issued to an artist, John Rand (No. 2,252). His purpose was as a "mode of preserving paints, and other fluids, by confining them in close mettalic vessels so constructed as to collapse with slight pressure, and thus force out the paint or fluid confined therein through proper openings for that purpose." The tubes, molded of lead and used to hold oil colours, were provided with caps to keep them airtight. The idea was later reinvented in 1892 for the commercial packaging of tootpaste. The first collapsible polythene tubes were produced in the U.S. for skin-tanning lotion in 1953.
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