BRAIN TEASERS
Math (page 3)

Math (page 3)

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 21 to 30.
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Find number abc

If 9acb5 + 9a603 = b9c3ba find number abc. Multiple solutions may exist.
Correct answers: 1
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Calculate the number 1450

NUMBERMANIA: Calculate the number 1450 using numbers [8, 5, 2, 3, 12, 737] 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 576a5 + a1a56 = bb1c1 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math

The workers in a large office...

The workers in a large office were making secret plans to stage a big office party for the 70-year old cleaning woman who had spent the better part of her life with the company.
Somehow the secret leaked out and the woman got wind of it. Much perturbed, she rushed to the office manager. "Please sir," she cried, "Do not let them do it! Do not let them do it!"
"Oh, come now, Mrs. Smith, you must not be so modest. After all, they simply want to show how much you are appreciated."
"Appreciated, my foot," exclaimed the woman. "I am NOT going to clean up after a mess like that!"
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Calculate the number 970

NUMBERMANIA: Calculate the number 970 using numbers [8, 4, 8, 1, 25, 115] 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 (5, 7, 15, 29, 30, 31, 32, 39, 40, 47, 78, 96) 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 77ab7 - c3a20 = 1a037 find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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Calculate the number 4742

NUMBERMANIA: Calculate the number 4742 using numbers [5, 6, 7, 2, 32, 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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Find number abc

If 72abc + 8aa6b = abcca8 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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Calculate the number 903

NUMBERMANIA: Calculate the number 903 using numbers [1, 4, 4, 7, 25, 871] 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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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (21, 22, 26, 29, 30, 34, 36, 37, 41, 48, 61) 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
CHECK ANSWER
#brainteasers #math #magicsquare
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James W. Alexander

Died 23 Sep 1971 at age 83 (born 19 Sep 1888).James Waddell Alexander was an American mathematician who founded the branch of mathematics originally known as analysis situs, now called topology. In 1912, he joined the faculty of the mathematics department at Princeton. Soon after, Alexander generalised the Jordan curve theorem and, in 1928, he discovered the Alexander polynomial which is much used in knot theory.
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