BRAIN TEASERS
Monthly Archive - February 2022

Monthly Archive - February 2022

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate the number 2501

NUMBERMANIA: Calculate the number 2501 using numbers [2, 5, 7, 9, 62, 515] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If 8b6c9 - c5348 = 533a find number abc. Multiple solutions may exist.
Correct answers: 9
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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: 12
CHECK ANSWER
#brainteasers #mastermind

My wife found a way...

My wife found a way to hide her candy from the guys at work.
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Calculate the number 7790

NUMBERMANIA: Calculate the number 7790 using numbers [7, 9, 9, 4, 81, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#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, 8, 9, 10, 12, 13, 16, 18, 19, 70, 87) 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
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#brainteasers #math #magicsquare
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Find number abc

If ac202 - caa0a = bc2ab find number abc. Multiple solutions may exist.
Correct answers: 8
CHECK ANSWER
#brainteasers #math
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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: 8
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1164

NUMBERMANIA: Calculate the number 1164 using numbers [8, 1, 1, 5, 47, 984] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 8a9a3 - a8389 = cbc3b find number abc. Multiple solutions may exist.
Correct answers: 10
CHECK ANSWER
#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: 3
CHECK ANSWER
#brainteasers #mastermind
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Gas mask

In 1850, the first U.S. patent No. 7,476 for a gas mask with a self-contained breathing apparatus was issued to Benjamin J. Lane of Cambridge, Mass. for a "respiring apparatus." (The first U.S. patent for an "inhaler or lung protector" resembling a gas mask of the modern type was awarded to Lewis Phectic Haslett of Louisville, Ky., on 12 Jun 1849. It had a filter of woolen fabric or other porous substance to purify the air and remove dust.)
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