BRAIN TEASERS
The Most Difficult Tasks (page 25)

The Most Difficult Tasks (page 25)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 241 to 250.
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Calculate the number 5172

NUMBERMANIA: Calculate the number 5172 using numbers [1, 6, 4, 2, 45, 816] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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 (5, 6, 8, 20, 21, 23, 24, 65, 66, 68, 97) 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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Calculate the number 3828

NUMBERMANIA: Calculate the number 3828 using numbers [3, 1, 3, 8, 90, 336] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania

The Reporter

A cub reporter for a small town newspaper was sent out on

his first assignment one day. He submitted the following

report to his editor.

"Mrs. Smith was injured in a one-car accident today. She is

recovering in County Hospital with lacerations on her

breasts."

The Editor scolded the new reporter, saying. "This is a

family paper. We don't use words like breasts around here.

Now go back and write something more appropriate!"

The young reporter thought long and hard. Finally he handed

the Editor the following report. "Mrs. Smith was injured in a

one-car accident today. She is recovering in County Hospital

with lacerations on her ( o )( o ) "

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Calculate the number 3992

NUMBERMANIA: Calculate the number 3992 using numbers [5, 4, 5, 5, 85, 898] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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 (13, 16, 20, 22, 23, 25, 26, 29, 30, 62, 92) 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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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
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2178

NUMBERMANIA: Calculate the number 2178 using numbers [8, 3, 5, 5, 99, 970] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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 (5, 8, 10, 12, 18, 21, 23, 33, 36, 38, 83) 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If cb55c - a0c06 = bbbc8 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#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: 0
CHECK ANSWER
#brainteasers #mastermind
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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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Robert Whitehead

Died 14 Nov 1905 at age 82 (born 3 Jan 1823).British engineer who invented the modern torpedo. His first torpedo lacked speed and range. However, by 1870 he had managed to increase its speed to 7 knots and could now hit a target 700 yards away. The following year the British Navy purchased Whitehead's invention. Although a spar torpedo, a charge attached to a long pole and carried by a small boat, had been used during the American Civil War, Robert Whitehead was the first to produce a self-propelling torpedo. Whitehead's torpedo was propelled by a compressed-air engine, carried 18lbs. of dynamite. Its most important feature was a self-regulating device which kept the torpedo at a constant preset depth. Edison made a movie of a Whitehead torpedo launch (1900).
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