BRAIN TEASERS
Math (page 59)

Math (page 59)

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 581 to 590.
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Calculate the number 6030

NUMBERMANIA: Calculate the number 6030 using numbers [3, 3, 8, 4, 76, 787] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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Find number abc

If 919aa - bb0c7 = c9877 find number abc. Multiple solutions may exist.
Correct answers: 0
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Calculate the number 8508

NUMBERMANIA: Calculate the number 8508 using numbers [8, 5, 7, 5, 13, 650] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania

A dentist ran out of anaesthet...

A dentist ran out of anaesthetic just before the last extraction for the day was scheduled.
He gave the nurse a very large needle, instructing her to jab it hard into the patient's butt when the signal was given, so it would take his attention away from the tooth extraction.
It all happened in an instant.
The nurse, patient, and pliers were in place. The signal was given, and the nurse bayoneted the patient with the needle just as the dentist yanked the tooth.
Afterwards, the dentist asked, "Hurt much?"
The patient hesitated, "Didn't hardly feel it come out. And, man, those roots were really deep!"
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (13, 14, 15, 24, 25, 26, 54, 58, 59, 60) 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 cbac2 + ba090 = 1a1ca2 find number abc. Multiple solutions may exist.
Correct answers: 0
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Calculate the number 873

NUMBERMANIA: Calculate the number 873 using numbers [5, 8, 8, 7, 15, 823] 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 88a4c - 29634 = c84bb find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 2508

NUMBERMANIA: Calculate the number 2508 using numbers [3, 8, 4, 9, 87, 328] 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 (2, 7, 8, 10, 13, 28, 29, 31, 39, 40, 42) 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 bb5c7 - bb09c = a35 find number abc. Multiple solutions may exist.
Correct answers: 1
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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