BRAIN TEASERS
Math (page 110)

Math (page 110)

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 1091 to 1100.
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Find number abc

If b3a7a + 1077a = accb2 find number abc. Multiple solutions may exist.
Correct answers: 7
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Calculate the number 1390

NUMBERMANIA: Calculate the number 1390 using numbers [5, 1, 7, 8, 61, 470] 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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MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (9, 11, 16, 17, 21, 23, 28, 63, 70, 72, 77, 90) 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: 2
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#brainteasers #math #magicsquare

Silence

After my husband and I had a huge argument, we ended up not talking to each other for days.
Finally, on the third day, he asked where one of his shirts was.
"Oh," I said, "So now you're speaking to me."
He looked confused,
"What are you talking about?"
"Haven't you noticed I haven't spoken to you for three days?" I challenged.
"No," he said, "I just thought we were getting along."

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Find number abc

If 3acb2 - 1887c = 17222 find number abc. Multiple solutions may exist.
Correct answers: 7
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#brainteasers #math
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Calculate the number 1395

NUMBERMANIA: Calculate the number 1395 using numbers [6, 3, 6, 9, 81, 720] 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 b4b39 - 3a267 = c6272 find number abc. Multiple solutions may exist.
Correct answers: 3
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#brainteasers #math
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Calculate the number 4493

NUMBERMANIA: Calculate the number 4493 using numbers [6, 7, 7, 8, 69, 665] 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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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (3, 5, 6, 7, 9, 10, 11, 27, 28, 29, 69, 76) 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: 2
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If c66cb + bb16a = 103ba6 find number abc. Multiple solutions may exist.
Correct answers: 5
CHECK ANSWER
#brainteasers #math
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Calculate the number 683

NUMBERMANIA: Calculate the number 683 using numbers [8, 3, 3, 2, 75, 322] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
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Otto Struve

Born 12 Aug 1897; died 6 Apr 1963 at age 65. Russian-American astronomer who was a fourth generation astronomer, the great-grandson of Friedrich Struve. He made detailed spectroscopic investigations of stars, especially close binaries and peculiar stars, the interstellar medium (where he discovered H II regions), and gaseous nebulae. He contributed to the understanding of the broadening of spectral lines due to stellar rotation, electric fields, and turbulence and worked to separate these effects from each other and from chemical abundances. He was a pioneer in the study of mass transfer in closely interacting binary stars. Struve emigrated to the USA (1921) and joined the Yerkes Observatory, Wisconsin, becoming its director in 1932.«
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