BRAIN TEASERS
Math (page 79)

Math (page 79)

These are fun math riddles. All of these tricky riddles are based on real math concepts and can be solved with purely math and logic. These are the tasks listed 781 to 790.
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Find number abc

If 9c79b - bcaa6 = 404b9 find number abc. Multiple solutions may exist.
Correct answers: 8
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Calculate the number 4011

NUMBERMANIA: Calculate the number 4011 using numbers [8, 5, 5, 9, 84, 660] 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 9c50b + b79aa = bbbaa5 find number abc. Multiple solutions may exist.
Correct answers: 6
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#brainteasers #math

What would you like for your birthday....

A middle-aged guy is out to dinner with his wife to celebrate her fortieth birthday. He says, "So what would you like, Julie? A Jaguar? A sable coat? A diamond necklace?"

She says, "Bernie, I want a divorce."

"My goodness," he says, "I wasn't planning on spending that much."

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Calculate the number 4288

NUMBERMANIA: Calculate the number 4288 using numbers [1, 4, 3, 1, 61, 846] 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, 4, 11, 12, 13, 14, 15, 21, 22, 38, 62, 69) 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 c5a57 - bc0ab = ba5c3 find number abc. Multiple solutions may exist.
Correct answers: 4
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#brainteasers #math
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Calculate the number 5157

NUMBERMANIA: Calculate the number 5157 using numbers [2, 8, 5, 9, 24, 707] 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 5ac24 - 42b32 = ccb2 find number abc. Multiple solutions may exist.
Correct answers: 3
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#brainteasers #math
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Calculate the number 6961

NUMBERMANIA: Calculate the number 6961 using numbers [1, 5, 9, 7, 74, 536] 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 (18, 19, 20, 27, 28, 29, 31, 32, 33) 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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Regiomontanus

Born 6 Jun 1436; died 6 Jul 1476 at age 40.German astronomer and mathematician who was chiefly responsible for the revival and advancement of trigonometry in Europe. His book De triangulis omnimodis (1464) is a systematic account of methods for solving triangles. In Jan 1472 he made observations of a comet which were accurate enough to allow it to be identified with Halley's comet 210 years later (being three returns of the 70 year period comet). He also observed several eclipses of the Moon. His interest in the motion of the Moon led him to make the important observation that the method of lunar distances could be used to determine longitude at sea. However, instruments of the time lacked the necessary accuracy to use the method at sea.
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