# Daily Brain Teasers for Thursday, 07 February 2019

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

## Stealthy as a shadow in the ...

Stealthy as a shadow in the dead of night, Cunning but affectionate if given a bite. Never owned but often loved. At my sport considered cruel, But that's because you never know me at all. What am I?The first user who solved this task is

**Nasrin 24 T**.#brainteasers #riddles #sport

## Remove 8 letters from this seq...

Remove 8 letters from this sequence (OUBPUQBLICAEPTIONNSP) to reveal a familiar English word.The first user who solved this task is

**Thinh Ddh**.#brainteasers #wordpuzzles

## MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (8, 11, 12, 18, 21, 22, 26, 29, 30, 97) 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

## Gardner Quincy ColtonBorn 7 Feb 1814; died 9 Aug 1898 at age 84. American lecturer who was the first to administer nitrous oxide as an anaesthetic. This followed when one of Colton's public demonstrations of the properties of nitrous oxide, was attended by a dentist. It was Horace Wells, who observed a volunteer paid no heed to any pain when he accidentally gashed leg while stumbling around under the influence of a moderate dose of the gas. Wells suggested the use of the gas as an anaesthetic, and even volunteered to have Colton administer the nitrous oxide while one of Wells' molars was extracted by his partner, dentist John Riggs (11 Dec 1844). Between 1864-97, Colton as anaesthetist administered nitrous oxide while his dental colleagues successfully extracted tens of thousands of teeth.« |

## Find number abc

If 5056b - b58b8 = a4c25 find number abc. Multiple solutions may exist.The first user who solved this task is

**Nílton Corrêa De Sousa**.#brainteasers #math

## What is the missing number?

What is the missing number?The first user who solved this task is

**Alfa Omega**.#brainteasers #math #riddles

## Find the right combination

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