BRAIN TEASERS
Brain Teasers

Brain Teasers

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 1 to 10.
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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 0
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#brainteasers #mastermind
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Calculate the number 4248

NUMBERMANIA: Calculate the number 4248 using numbers [2, 8, 2, 5, 32, 501] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
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#brainteasers #math #numbermania
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Find number abc

If 70c93 - 27b17 = 4337a find number abc. Multiple solutions may exist.
Correct answers: 11
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#brainteasers #math

How Cold Is It Outside?

How Cold Is Cold?
60 Californians put on sweaters (if they can find one)
50 Miami residents turn on the heat
40 You can see your breath, Californians shiver uncontrollably, Minnesotans go swimming
35 Italian cars don't start
32 Water freezes
30 You plan your vacation to Australia
25 Boston water freezes, Californians weep pitiably, Minnesotans eat ice cream, Canadians go swimming
20 Politicians begin to talk about the homeless, New York City water freezes, Miami residents plan vacation further South
15 French cars don't start, Cat insists on sleeping in your bed with you
10 You need jumper cables to get the car going
5 American cars don't start
0 Alaskans put on T-shirts
-10 German cars don't start, Eyes freeze shut when you blink
-15 You can cut your breath and use it to build an igloo, Arkansans stick tongue on metal objects, Miami residents cease to exist
-20 Cat insists on sleeping in pajamas with you, Politicians actually do something about the homeless, Minnesotans shovel snow off roof, Japanese cars don't start
-25 Too cold to think, You need jumper cables to get the driver going
-30 You plan a two week hot bath, Swedish cars don't start
-40 Californians disappear, Minnesotans button top button, Canadians put on sweaters, Your car helps you plan your trip South
-50 Congressional hot air freezes, Alaskans close the bathroom window
-80 Hell freezes over, Polar bears move South
-90 Lawyers put their hands in their own pockets
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Which is a winning combination of digits?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 3
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 300

NUMBERMANIA: Calculate the number 300 using numbers [3, 4, 2, 8, 43, 173] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
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#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (6, 7, 11, 13, 15, 16, 20, 52, 53, 57) 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: 4
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#brainteasers #math #magicsquare
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Find number abc

If c3b95 - bb70b = 7ba9a find number abc. Multiple solutions may exist.
Correct answers: 5
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#brainteasers #math
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What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 7
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2394

NUMBERMANIA: Calculate the number 2394 using numbers [8, 6, 1, 8, 84, 265] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
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#brainteasers #math #numbermania
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Find number abc

If 731a4 - 70ab0 = 2ac4 find number abc. Multiple solutions may exist.
Correct answers: 13
CHECK ANSWER
#brainteasers #math
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The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
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Otto Eisenschiml

Died 7 Dec 1963 at age 83 (born 16 Jun 1880).Austrian-American chemist and historian. After obtaining a university degree in Vienna he emigrated to the U.S. (1901). He worked as a chemist with the American Linseed Co. In 1910, with Norman Copthorne, he developed a method of determining the presence of fish oils in vegetable oils, and the method was adopted by the U.S. Dept of Agriculture in 1925. Earlier, he had developed the first one-piece window envelope for the Window Envelope Company. Partly to supply the Window Envelope Company with a special varnish for its envelopes, Eisenschiml established the Scientific Oil Company (now Scientific Chemicals, Inc.) He also wrote over a dozen books on the Civil War; the best known is Why Was Lincoln Murdered? (1937).
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