# Daily Brain Teasers for Sunday, 13 September 2020

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

## Find number abc

If a10a1 + 919ac = 1229b9 find number abc. Multiple solutions may exist.**Nasrin 24 T**.

## 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.**Nasrin 24 T**.

## Calculate the number 1050

NUMBERMANIA: Calculate the number 1050 using numbers [7, 2, 2, 2, 16, 486] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**Nasrin 24 T**.

### Two Drops

A lady went to the bar on a cruise ship, and ordered a Scotch, with two drops of water. The bartender gave her the drink, and she said, "I'm on this cruise to celebrate my 80th birthday, and it's today."

The bartender said, "Well, since it's your birthday, this one's on me."

As the lady finished her drink, a woman, to her right, said, "I'd like to buy you a drink, too." The lady said, "Thank you, how sweet of you. OK, then, Bartender, I want another Scotch, with two drops of water."

"Coming up," said the bartender.

As she finished that drink, a man, to her left, said, "I'd like to buy you a drink too." The lady said, "Thank you very much, my dear. Bartender, I'll have another Scotch, with two drops of water."

"Coming right up," the bartender said.

As he gave her the drink, this time, he said, "Ma'am, I'm dying of curiosity. Why the Scotch with only two drops of water?"

The old woman giggled, and replied, "Sonny, when you're my age, you've learned how to hold your liquor. Water, however, is a whole other issue."

## MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (2, 5, 7, 16, 19, 21, 34, 55, 58, 60) 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.**Nasrin 24 T**.

## Sir Robert RobinsonBorn 13 Sep 1886; died 8 Feb 1975 at age 88. English chemist who received the 1947 Nobel Prize for Chemistry for his research on a wide range of organic compounds, notably alkaloids (complex, naturally occurring, nitrogen-containing organic compounds that can have profound effects on living things). In his early research, he studied plant pigments and synthesized anthocyanins and flavones. Later, working with alkaloids, he discovered the structures of morphine (1925) and strychnine (1946). |

## Find number abc

If a5a47 - b71bc = c8785 find number abc. Multiple solutions may exist.**Nasrin 24 T**.

## 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.**Nasrin 24 T**.

## Calculate the number 5431

NUMBERMANIA: Calculate the number 5431 using numbers [2, 5, 4, 4, 82, 953] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**Nasrin 24 T**.

## Find number abc

If 1bc55 + 9a41b = 1b3a65 find number abc. Multiple solutions may exist.**Nasrin 24 T**.

## What a winning 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.**Nasrin 24 T**.

## Calculate the number 1221

NUMBERMANIA: Calculate the number 1221 using numbers [4, 1, 8, 5, 29, 998] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**Nasrin 24 T**.