BRAIN TEASERS
Math

Math

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 1 to 10.
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Calculate the number 6637

NUMBERMANIA: Calculate the number 6637 using numbers [5, 9, 2, 1, 60, 749] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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MAGIC SQUARE: Calculate A-B*C

The aim is to place the some numbers from the list (2, 3, 5, 6, 7, 9, 15, 16, 18, 23, 45, 74) 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 b1435 - 1ca1b = 4ab19 find number abc. Multiple solutions may exist.
Correct answers: 0
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Funny to do list

Funny to do list: 1. Get to pet store 2. Buy bird seeds 3. Ask how long it will take for the birds to grow 4. Wait for the reaction.
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Calculate the number 4414

NUMBERMANIA: Calculate the number 4414 using numbers [5, 4, 8, 9, 85, 281] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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Find number abc

If b1bc1 + 448aa = 761c1 find number abc. Multiple solutions may exist.
Correct answers: 0
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Calculate the number 1443

NUMBERMANIA: Calculate the number 1443 using numbers [2, 4, 5, 8, 22, 233] 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 (14, 16, 25, 29, 31, 40, 68, 70, 77, 79, 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
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#brainteasers #math #magicsquare
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Find number abc

If 4cc58 + 64c5a = bb4cbb find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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Calculate the number 2234

NUMBERMANIA: Calculate the number 2234 using numbers [2, 8, 2, 9, 70, 181] 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 6bc3a - 6a263 = 2bb1 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Edison patent

In 1882, Thomas A. Edison was issued a patent for an improvement to the telephone (No. 252,442). It described a carbon microphone. Finely divided conducting material, such as carbon, between metal cups mounted on arms is attached to the mouthpiece diaphragm. As sound waves directed through the mouthpiece move the diaphragm, the arms change the pressure on the carbon button which in turn varies an electric current passing through the carbon button. Changes in the current correspond to the pitch and amplitude of the sound. One arm conducts the electrical current to the carbon button, and the the other from it.
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