BRAIN TEASERS

enter your answer and press button OK

MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (6, 8, 15, 19, 21, 26, 28, 61, 63, 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.

Correct answers: 2

#brainteasers #math #magicsquare

Register with your Google Account and start collecting points.

Check your ranking on list.

April Fool's Day - Suggestion

Cover onions in caramel.

Jokes of the day - Daily updated jokes. New jokes every day.

Follow Brain Teasers on social networks

Brain Teasers

puzzles, riddles, mathematical problems, mastermind, cinemania...

Nylon patented

In 1937, Dr. Wallace Carothers, a research chemist for DuPont, who invented nylon, received a patent for the synthetic fiber. The U.S. patent, No. 2,071,250, which was assigned to the E.I. du Pont de Nemours & Co. Inc. The patent covered synthetic linear condensation polymers capable of being drawn into strong pliable fibres, as well as the process for making them. One of the first consumer uses of this new wonder plastic was replacing hog bristles in tooth brushes. Du Pont began production of such bristle filament on 24 Feb 1938, at their Arlington, N.J. factory. Commercial production of yarn for nylon hosiery followed at their Seaford, Delaware factory on 15 Dec 1939.[Image: Carothers stretching sample of nylon fabric.]

This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.