BRAIN TEASERS
The Easiest Tasks (page 700)

The Easiest Tasks (page 700)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 6991 to 7000.
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Calculate the number 2494

NUMBERMANIA: Calculate the number 2494 using numbers [2, 7, 3, 5, 70, 308] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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Calculate the number 919

NUMBERMANIA: Calculate the number 919 using numbers [3, 8, 6, 2, 51, 782] 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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Calculate the number 4514

NUMBERMANIA: Calculate the number 4514 using numbers [4, 5, 4, 5, 80, 923] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania

Sherlock Holmes and Dr. Watson

Sherlock Holmes and Dr. Watson go on a camping trip, set up their tent, and fall asleep.

Some hours later, Holmes wakes his faithful friend. "Watson, look up at the sky and tell me what you see."

Watson replies, "I see millions of stars."

"What does that tell you?"

Watson ponders for a minute. "Astronomically speaking, it tells me that there are millions of galaxies and potentially billions of planets. Astrologically, it tells me that Saturn is in Leo. Timewise, it appears to be approximately a quarter past three. Theologically, it's evident the Lord is all-powerful and we are small and insignificant. Meteorologically, it seems we will have a beautiful day tomorrow. What does it tell you?"

Holmes is silent for a moment, then speaks. "Watson, you idiot, someone has stolen our tent."

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Calculate the number 1008

NUMBERMANIA: Calculate the number 1008 using numbers [2, 8, 6, 6, 81, 850] 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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Calculate the number 5783

NUMBERMANIA: Calculate the number 5783 using numbers [9, 7, 8, 2, 87, 736] 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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Calculate the number 802

NUMBERMANIA: Calculate the number 802 using numbers [4, 2, 2, 7, 98, 628] 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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Calculate the number 4154

NUMBERMANIA: Calculate the number 4154 using numbers [3, 2, 6, 2, 45, 814] 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 (10, 11, 13, 14, 18, 21, 69, 70, 73, 74, 77, 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: 1
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#brainteasers #math #magicsquare
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Calculate the number 9737

NUMBERMANIA: Calculate the number 9737 using numbers [9, 6, 4, 7, 79, 671] 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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Calculate the number 2758

NUMBERMANIA: Calculate the number 2758 using numbers [4, 8, 8, 8, 73, 726] 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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First refracting telescope

In 1608, Johannes Lippershey (c.1570-c.1619) demonstrated a new invention, the first optical (refracting) telescope - prototype of the modern telescopes - to the Netherlands States General. Lippershey was a lens grinder who furnished spectables. An apprentice discovered that - by separating both a long-focus lens and a short-focus lens in front of the eye - distant objects appeared closer. Lippershey mounted lenses in tubes, applied for a patent in 1608, and also offered them for sale to the Dutch government, which appreciated their military value. When Galileo heard of the device, he made a similar arrangement and used it to study the heavens. It was named a "telescope" by a guest at an outdoor banquet 14 Apr 1611 honouring Galileo, where he demonstrated it to the assembly.«
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