BRAIN TEASERS
Math (page 100)

Math (page 100)

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 991 to 1000.
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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (14, 15, 16, 18, 19, 20, 32, 33, 34, 54, 93) 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: 4
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#brainteasers #math #magicsquare
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Find number abc

If 8b6ba - 3ac0b = cc2b6 find number abc. Multiple solutions may exist.
Correct answers: 1
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Calculate the number 590

NUMBERMANIA: Calculate the number 590 using numbers [9, 1, 5, 5, 58, 531] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
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#brainteasers #math #numbermania

Sounds more like a nightmare...

An older couple wakes up in the morning and the husband looks over at his wife and says, " Wow! You wouldn't believe the dream I had..."

The wife replies, "Yes, go on tell me."

So the husband says "I had a dream that you left me after 20 years of being married."

The wife says, "Oh, it sounds more like a nightmare."

The husband says, "No, I am sure it was a dream."

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Find number abc

If ba42c - 70baa = 205a7 find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Calculate the number 1242

NUMBERMANIA: Calculate the number 1242 using numbers [4, 2, 8, 4, 44, 502] 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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MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (17, 18, 19, 20, 21, 22, 40, 42, 44, 62) 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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#brainteasers #math #magicsquare
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Find number abc

If ba14c - 36944 = 432a3 find number abc. Multiple solutions may exist.
Correct answers: 3
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#brainteasers #math
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Calculate the number 489

NUMBERMANIA: Calculate the number 489 using numbers [9, 9, 4, 5, 97, 992] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
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#brainteasers #math #numbermania
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Find number abc

If 7b2c3 - ac210 = 1a083 find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Calculate the number 1612

NUMBERMANIA: Calculate the number 1612 using numbers [4, 9, 9, 8, 89, 169] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
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#brainteasers #math #numbermania
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Macedonio Melloni

Died 11 Aug 1854 at age 56 (born 11 Apr 1798).Italian physicist who was the firstto extensively research infrared radiation. Sir William Frederick Herschel discovered infrared radiation in 1800, but research stalled until the invention of a thermopile in 1830. That instrument was a series of strips of two different metals that produced electric current when one end was heated. Melloni improved the thermopile and used it to detect infrared radiation. In 1846, from an observation point high on Mount Vesuvius, he measured the slight heating effect of moonlight. He showed also that rock salt, being transparent to infrared, made suitable lenses and prisms to demonstrate the reflection, refraction, polarization and interference of infrared in the same manner as visible light.
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