BRAIN TEASERS
Math (page 103)

Math (page 103)

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 1021 to 1030.
Register with your Google Account and start collecting points.
Check your ranking on list.
[link]

MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (4, 6, 8, 10, 12, 14, 16, 26, 28, 30, 48) 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
[link]

Find number abc

If 1a29c + c82b1 = 52a9a find number abc. Multiple solutions may exist.
Correct answers: 3
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 475

NUMBERMANIA: Calculate the number 475 using numbers [1, 8, 2, 3, 40, 121] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
CHECK ANSWER
#brainteasers #math #numbermania

An older, white haired man wal...

An older, white haired man walked into a jewelry store one Fridayevening with a beautiful young gal at his side.
He told the jeweler he was looking for a special ring for hisgirlfriend.
The jeweler looked through his stock and brought out a $5,000 ring andshowed it to him.
The old man said, "I don't think you understand, I want something veryspecial."
At that Statement, the jeweler went to his special stock and broughtanother ring over.
"Here's a stunning ring at only $40,000," the jeweler said. The younglady's eyes sparkled and her whole body trembled with excitement.
The old man seeing this said, "We'll take it."
The jeweler asked how payment would be made and the old man stated, bycheck. "I know you need to make sure my check is good, so I'll write itnow and you can call the bank Monday to verify the funds and I'll pickthe ring up Monday afternoon," he said.
Monday morning, a very teed-off jeweler phoned the old man. "There's nomoney in that account."
"I know," said the old man, "but can you imagine the weekend I had?"
Don't mess with Old People.
Jokes of the day - Daily updated jokes. New jokes every day.
[link]

Find number abc

If 73ca5 + ac317 = 1b3b6b find number abc. Multiple solutions may exist.
Correct answers: 5
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 951

NUMBERMANIA: Calculate the number 951 using numbers [9, 7, 6, 6, 32, 778] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
[link]

MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (3, 5, 6, 10, 12, 13, 48, 49, 50, 51, 54) 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: 3
CHECK ANSWER
#brainteasers #math #magicsquare
[link]

Find number abc

If a94a3 + bc698 = 8c1a1 find number abc. Multiple solutions may exist.
Correct answers: 6
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 1854

NUMBERMANIA: Calculate the number 1854 using numbers [1, 2, 3, 9, 99, 322] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
[link]

Find number abc

If 5bb3c - 1ca5a = 415b5 find number abc. Multiple solutions may exist.
Correct answers: 3
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 1968

NUMBERMANIA: Calculate the number 1968 using numbers [1, 1, 3, 3, 51, 454] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
PREVIOUS PAGE
NEXT PAGE
Follow Brain Teasers on social networks
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Last Correct Answer

Top 10 Users (1174)

1. H Tav
5861
2. c. raj.
5777
3. Nasrin 24 T
5731
4. Fazil Hashim
5718
5. Thinh Ddh
5557
6. Alfa Omega
4681
7. Djordje Timotijevic
4549
8. Mita Kojd
4525
9. Jakubovski Vladimir
4443
10. Chandu Rajyaguru
4419
See full ranking list

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.
This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.