BRAIN TEASERS
Monthly Archive - September 2022

Monthly Archive - September 2022

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate the number 1651

NUMBERMANIA: Calculate the number 1651 using numbers [6, 2, 7, 4, 31, 649] 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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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (2, 23, 27, 31, 33, 35, 41, 64, 69, 73, 77, 79) 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: 1
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#brainteasers #math #magicsquare
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Find number abc

If c1213 + 38bcc = aaaba find number abc. Multiple solutions may exist.
Correct answers: 3
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#brainteasers #math

Difference between a Friend and a Best Friend?

Difference between a Friend and a Best Friend? A friend: Wow, you are so pretty. Best Friend: Shrek called, he wants his face back.
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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
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#brainteasers #mastermind
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Calculate the number 6317

NUMBERMANIA: Calculate the number 6317 using numbers [2, 5, 9, 9, 53, 399] 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 bc1aa - b5b0b = 226c find number abc. Multiple solutions may exist.
Correct answers: 3
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#brainteasers #math
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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: 8
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#brainteasers #mastermind
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Calculate the number 4953

NUMBERMANIA: Calculate the number 4953 using numbers [4, 1, 1, 8, 98, 979] 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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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (2, 8, 9, 10, 15, 16, 17, 23, 24, 25, 57, 61) 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 babcb - 5990b = a7c0 find number abc. Multiple solutions may exist.
Correct answers: 11
CHECK ANSWER
#brainteasers #math
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Simon Lake submarine patent

In 1897, a U.S. patent was issused for a "Submarine Vessel" invented by Simon Lake (No. 581,213). It described oscillatory lateral vanes on the sides of the vessel to set for ascending or descending, a weight to shift fore-and-aft to keep the vessel on an even keel, a compressed air reservoir, ballast tanks, an "air-tight diver's chamber provided at the bottom with a trap" (suitable for diving salvage operations), and wheels to travel on the water-bed which could be propelled and steered from within. Lake was interested in the use of a submarine for commercial, rather than military, purposes. It had a hinged observation tube, which could be provided with a mirror (forerunner of the perioscope). It was expected to be steam-powered on the surface (but in practice the heat generated by the boiler was intolerable to a crew, and thus impracticable.)«[Image: rear view of submarine, showing hull with lateral vanes, wheels and propeller.]
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