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Jakubovski Vladimir

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NUMBERMANIA: Calculate the number 790 using numbers [9, 2, 7, 7, 16, 718] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The aim is to place the some numbers from the list (10, 11, 12, 13, 14, 16, 21, 22, 25, 67, 85) 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.
If ab29c + a01cb = 12bcb7 find number abc. Multiple solutions may exist.

Casein fibre

In 1938, the first U.S. patent was issued for casein fibre (No. 2,140,274). Earl Ovando Whittier and Stephen Philip Gould of Washington, D.C. had first produced casein fibre in December 1935. They dedicated the patent "to the free use of the people of the United States of America." Casein is the main protein found in milk. Their invention was to produce dispersions of casein (mixed usually with plasticizers and salts), to be extruded into fibres having the requisite characteristics of strength, water resistance, flexibility, and softness necessary to make them suitable as substitutes for wool and other fibres. Some of the best plasticizers suggested were the fat acids to give the fibres flexibility, softness and water repellancy. Sodium aluminate improved the fibre's strength.

A man is walking from the lake...

A man is walking from the lake carrying two fish in a bucket. He is approached by the game warden who asks him for his fishing license.
The fisherman says to the warden, "I did not catch these fish, they are my pets. Every day I come down to the water and whistle and these fish jump out and I take them around to see the sights only to return them at the end of the day."
The warden, not believing him, reminds him that it is illegal to fish without a license. The fisherman turns to the warden and says, "If you don?t believe me then watch," as he throws the fish back into the water.
The warden says, "Now whistle to your fish and show me how they jump out the water."
The fisherman turns to the warden and says, "What fish?"
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