BRAIN TEASERS

# Find number abc

If 92cac + 82a0b = 17c7a9 find number abc. Multiple solutions may exist.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math

### 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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### Seigneur (lord) De La Bigotiere François Viète

Died 13 Dec 1603 (born 1540).French mathematician who introduced the first systematic algebraic notation and contributed to the theory of equations. As Henry IV's cryptographer, he broke an elaborate cipher used by Spanish agents. In algebra, he made a number of innovations in the use of symbolism and several technical terms still in use (e.g., coefficient) were introduced by him. By using algebraic rather than geometric methods, Viète was able to solve a number of geometrical problems. In his In artem analyticam isagoge (1591) Viète introduced such basic algebraic conventions as using letters to represent both known and unknown quantities, while improving the notation for the expression of square and cubic numbers.
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