BRAIN TEASERS
Math (page 67)

Math (page 67)

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 661 to 670.
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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (8, 10, 12, 14, 19, 21, 53, 57, 61, 64, 99) 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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Find number abc

If c6cb2 - 2a624 = 26acb find number abc. Multiple solutions may exist.
Correct answers: 1
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Calculate the number 722

NUMBERMANIA: Calculate the number 722 using numbers [9, 3, 2, 4, 71, 274] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania

Two engineering students meet...

Two engineering students meet on campus one day.The first engineer calls out to the other, "Hey -- Nice bike!Where did you get it?"
"Well," replies the other, "I was walking to class theother day when this pretty, young co-ed rides up onthis bike. She jumps off, takes off all of her clothes,and says 'You can have ANYTHING you want!!' "
"Good choice," says the first, "her clothes wouldn'thave fit you anyway."
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Find number abc

If 231a6 + 5baac = aa95b find number abc. Multiple solutions may exist.
Correct answers: 1
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Calculate the number 7045

NUMBERMANIA: Calculate the number 7045 using numbers [6, 3, 4, 5, 94, 731] 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 (24, 25, 26, 27, 31, 32, 51, 72, 74, 79) 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 b8a00 - b554b = c151 find number abc. Multiple solutions may exist.
Correct answers: 4
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#brainteasers #math
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Calculate the number 2487

NUMBERMANIA: Calculate the number 2487 using numbers [7, 9, 1, 2, 82, 341] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Find number abc

If a4c2c + 64a96 = b3932b find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Calculate the number 1134

NUMBERMANIA: Calculate the number 1134 using numbers [6, 4, 6, 7, 67, 877] 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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Henry Moseley

Died 10 Aug 1915 at age 27 (born 23 Nov 1887). Henry Gwyn-Jeffreys Mosely was an English physicist who experimentally demonstrated that the major properties of an element are determined by the atomic number, not by the atomic weight, and firmly established the relationship between atomic number and the charge of the atomic nucleus. He began his research under Ernest Rutherford while serving as lecturer at the Univ. of Manchester. Using X-ray photographic techniques, he determined a mathematical relation between the radiation wavelength and the atomic numbers of the emitting elements. Moseley obtained several quantitative relationships from which he predicted the existence of three missing elements (numbers 43, 61, and 75) in the periodic table, all of which were subsequently identified. Moseley was killed in action during WW I.
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