# Daily Brain Teasers for Friday, 05 March 2021

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |

## Calculate the number 1459

NUMBERMANIA: Calculate the number 1459 using numbers [8, 5, 3, 1, 93, 318] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.The first user who solved this task is

**Nílton Corrêa de Sousa**.#brainteasers #math #numbermania

## MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (5, 6, 13, 22, 23, 24, 25, 30, 32, 50, 99) 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.The first user who solved this task is

**Nílton Corrêa de Sousa**.#brainteasers #math #magicsquare

## Find number abc

If c08a3 + 43c9a = b40cb find number abc. Multiple solutions may exist.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math

### A mathematician, a physicist...

A mathematician, a physicist, and an engineer are all given identical rubber balls and told to find the volume. They are given any tools they want, and have all the time they need.

The mathematician uses a measuring tape to record the circumference. He then divides by two times pi to get the radius, cubes that, multiplies by pi again, and then multiplies by four-thirds and thereby calculates the volume.

The physicist gets a bucket of water, places 1.000000 gallons of water in the bucket, drops in the ball and measures the displacement to six significant figures.

The engineer writes down the serial number of the ball and looks it up online.

The mathematician uses a measuring tape to record the circumference. He then divides by two times pi to get the radius, cubes that, multiplies by pi again, and then multiplies by four-thirds and thereby calculates the volume.

The physicist gets a bucket of water, places 1.000000 gallons of water in the bucket, drops in the ball and measures the displacement to six significant figures.

The engineer writes down the serial number of the ball and looks it up online.

## Which is a winning combination of digits?

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.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #mastermind

## Julian Lowell CoolidgeDied 5 Mar 1954 at age 80 (born 28 Sep 1873). American mathematician and educator noted for numerous published works in theoretical mathematics. He earned a B.A. degree at Harvard (1895), then a B.Sc. (1897) from Oxford, England, the first natural science degree ever awarded at Oxford. He began teaching at Groton School, Conn. (1897-99) where one of his pupils was Franklin D Roosevelt, the future U.S. president. Coolidge was an instructor at Harvard University, taking leave to study abroad (1902-04) with Corrado Segre at Turin and Eduard Studyat the University of Bonn ( Ph.D. 1904). When he returned to Harvard, he remained there for the rest of his career. Later in life, he took an interest in his subject's history, writing Mathematics of the Great Amateurs (1949).« |

## Calculate the number 992

NUMBERMANIA: Calculate the number 992 using numbers [5, 8, 5, 9, 82, 608] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.The first user who solved this task is

**Nílton Corrêa de Sousa**.#brainteasers #math #numbermania

## Find number abc

If c8850 + 9488b = bca7ab find number abc. Multiple solutions may exist.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math

## Which is a winning combination of digits?

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.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #mastermind

## Calculate the number 4436

NUMBERMANIA: Calculate the number 4436 using numbers [1, 9, 8, 2, 79, 502] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #numbermania

## MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (4, 5, 12, 14, 21, 22, 29, 68, 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.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #magicsquare

## Find number abc

If b9a8c - cb43a = 5ab5a find number abc. Multiple solutions may exist.The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math