BRAIN TEASERS
Math (page 48)

Math (page 48)

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 471 to 480.
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Calculate the number 549

NUMBERMANIA: Calculate the number 549 using numbers [1, 1, 7, 9, 73, 461] 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 7b542 + 2a248 = bcc7ac find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 6606

NUMBERMANIA: Calculate the number 6606 using numbers [9, 4, 7, 5, 58, 395] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania

@kirkfox won't save you

I USED TO THINK THAT I COULD BE A HERO.

I USED TO WANT TO,BUT AS I'VE GOTTEN OLDER,

I'VE REALIZED THERE'S LESS AND LESS PEOPLE

THAT I WANT TO SAVE.

@kirkfox won't save you. http://on.cc.com/1HeB2l4

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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (9, 10, 11, 24, 25, 26, 70, 71, 72, 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: 0
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#brainteasers #math #magicsquare
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Find number abc

If 6b9c4 - 1a7ac = 4c169 find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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Calculate the number 718

NUMBERMANIA: Calculate the number 718 using numbers [9, 4, 8, 3, 27, 194] 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 7cb06 + 69ac0 = 1a29c6 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 789

NUMBERMANIA: Calculate the number 789 using numbers [1, 5, 1, 9, 75, 765] 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 (6, 11, 13, 14, 21, 23, 26, 29, 32, 33, 39, 63, 81) 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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Find number abc

If a9ac7 + 990c9 = aa82bc find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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Arago announces electromagnetism

In 1820, Francois Arago announced that a copper wire between the poles of a voltaic cell, could laterally attract iron filings to itself (Ann. de Chim. et de Physique., xv. p.93). His discovery came in the same year that Oersted discovered that an electric current flowing in a wire would deflect a neighbouring compass needle. Arago in the same publication described how he had successfully succeeded in causing permanent magnetism in steel needles laid at right angles to the copper wire. Arago and André-Marie Ampère, discussed and experimented with forming the copper wire into a helix to intensify the magnetizing action. However, it was not until 1825 that the electromagnet in its familiar form was invented by William Sturgeon.«
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