BRAIN TEASERS
Math (page 13)

Math (page 13)

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 121 to 130.
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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
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Find number abc

If 1bcca + 4bba5 = cb587 find number abc. Multiple solutions may exist.
Correct answers: 1
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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
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#brainteasers #math #numbermania

April Fool's Day - Install the Blue Screen...

Install the Blue Screen of Death screen-saver on someone’s computer.
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Find number abc

If 4c7b7 - c7ca2 = b4b5 find number abc. Multiple solutions may exist.
Correct answers: 1
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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
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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 (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
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#brainteasers #math #magicsquare
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Find number abc

If ba6aa - a0c91 = 1a2b6 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 1669

NUMBERMANIA: Calculate the number 1669 using numbers [3, 5, 9, 6, 39, 344] 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 9c3bc - ccc0b = 19ab2 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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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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U.S. patent issued to boy

In 1988, a U.S. patent was issued to 11-year-old Richard G. Woodbridge for the brush he designed to clean out sawdust accumulating in chain saw cuts to avoid sawdust build-up that otherwise can cause the chain saw to jam (No. 4,748,745). The brush is stationary, mounted on two brackets above to the chain saw blade, and is used by turning the chain saw upside down and moving the bristles through the saw cut. He was inspired by the bristles along the back of windshield snow scrapers. As the son of patent attorney Richard C. Woodbridge the boy had help in adding an optional brush agitator that would tranfer vibrations from the chain to the brush to improve the sawdust removal rate.«
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