BRAIN TEASERS
The Most Difficult Tasks (page 63)

The Most Difficult Tasks (page 63)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 621 to 630.
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Calculate the number 3440

NUMBERMANIA: Calculate the number 3440 using numbers [5, 5, 4, 2, 34, 349] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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Find number abc

If 5ac0c + b42b0 = 86abc find number abc. Multiple solutions may exist.
Correct answers: 0
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Calculate the number 725

NUMBERMANIA: Calculate the number 725 using numbers [4, 3, 1, 5, 75, 121] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania

Sitting on the edge of the hig...

Sitting on the edge of the highway waiting to catch speeders, a state police officer saw a car driving along at 22 M.P.H. He thinks to himself, that car is just as dangerous as a speeder. So, he turns his lights on and pulls the car over. Approaching the car, he notices there are 5 old ladies, two at the front and 3 at the back, wide eyed and looking like ghosts.
The driver, obviously confused, said, "Officer, I don’t understand, Iwasn’t doing over the speed limit! What did you pull me over for?"
"Ma’am," the officer said, "You should know that driving slower than the speed limit can also be dangerous".
"Slower than the speed limit? No sir! I was doing exactly 22 miles an hour", the old woman said proudly.
The officer, trying not to laugh, explains that 22 is the route number, not the speed limit. A little embarrassed, the woman smiled and thanked the officer for pointing out her error.
"Before I go Ma’am, I have to ask, is everyone ok? These women seem badly shaken and haven’t said a word since I pulled you over."
"Oh! they’ll be all right in a minute, officer. We just got off Route142" ...
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Calculate the number 983

NUMBERMANIA: Calculate the number 983 using numbers [4, 4, 9, 9, 73, 910] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania
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Calculate the number 2434

NUMBERMANIA: Calculate the number 2434 using numbers [4, 8, 4, 7, 67, 817] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania
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Calculate the number 4020

NUMBERMANIA: Calculate the number 4020 using numbers [7, 8, 3, 4, 95, 352] 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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Calculate the number 1608

NUMBERMANIA: Calculate the number 1608 using numbers [1, 3, 3, 3, 85, 339] 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 392bc + ab5cc = 113abc find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 1006

NUMBERMANIA: Calculate the number 1006 using numbers [9, 4, 8, 7, 96, 616] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If c5bba + b9a3a = 6cbca find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
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Laser patent

In 1967, a U.S. patent for "Ruby Laser Systems" was issued to Theodore Maiman (No. 3,353,115), for which he had applied on 13 Apr 1961. He had first operated a laser based on a ruby crystal on 16 May 1960, at Hughes Research Laboratories in Malibu, California.
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