BRAIN TEASERS
Monthly Archive - June 2022 (page 3)

Monthly Archive - June 2022 (page 3)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.
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Calculate the number 2178

NUMBERMANIA: Calculate the number 2178 using numbers [2, 7, 6, 1, 96, 232] 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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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (23, 25, 26, 28, 33, 36, 41, 43, 51, 91) 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
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If baa96 - bba71 = 2c2a find number abc. Multiple solutions may exist.
Correct answers: 4
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#brainteasers #math

Uber is in trouble because it...

Uber is in trouble because it doesn't pay any taxi.
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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 672

NUMBERMANIA: Calculate the number 672 using numbers [5, 8, 8, 6, 16, 618] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Find number abc

If b3a7a + 1077a = accb2 find number abc. Multiple solutions may exist.
Correct answers: 7
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: 10
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1390

NUMBERMANIA: Calculate the number 1390 using numbers [5, 1, 7, 8, 61, 470] 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 (9, 11, 16, 17, 21, 23, 28, 63, 70, 72, 77, 90) 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
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 3acb2 - 1887c = 17222 find number abc. Multiple solutions may exist.
Correct answers: 7
CHECK ANSWER
#brainteasers #math
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Juan de la Cierva

Born 21 Sep 1895; died 19 Dec 1936 at age 41.Juan de la Cierva (Codorniu) was a Spanish aeronautical engineer who invented the autogiro (1923), a predecessor to the helicopter. Its rotor, mounted on a mast, was not powered but provided lift by auto-rotation. Power was provided by a forward-mounted engine and a conventional propeller. Flight was controlled by elevators, a rudder, and usually ailerons, though some roll control could be achieved by adjusting the tilt of the rotor head. Unlike the later helicopters, it could not take off vertically nor hover though it could takeoff and land in a much shorter distance, it could. However, if an autogiro lost power, it could spin safely back down to earth like a maple seed. He died in a fixed-wing plane accident.«
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