# Daily Brain Teasers for Tuesday, 12 January 2021

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

## 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.**Nasrin 24 T**.

## Calculate the number 5547

NUMBERMANIA: Calculate the number 5547 using numbers [7, 4, 2, 5, 95, 564] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**Nasrin 24 T**.

## Find number abc

If c9ac8 - 11288 = 2815b find number abc. Multiple solutions may exist.**Nasrin 24 T**.

### Volunteer fire department

A fire started on some grasslands near a farm. The county fire department was called to put out the fire. The fire was more than the county fire department could handle. Someone suggested that a nearby volunteer bunch be called. Despite some doubt that the volunteer outfit would be of any assistance, the call was made.

The volunteers arrived in a dilapidated old fire truck. They rumbled straight towards the fire, drove right into the middle of the flames and stopped! The firemen jumped off the truck and frantically started spraying water in all directions. Soon they had snuffed out the center of the fire, breaking the blaze into two easily-controlled parts.

Watching all this, the farmer was so impressed with the volunteer fire department's work and was so grateful that his farm had been spared, that right there on the spot he presented the volunteers with a check for $1,000. A local news reporter asked the volunteer fire captain what the department planned to do with the funds.

"That ought to be obvious," he responded, wiping ashes off his coat. "The first thing we're gonna do is get the brakes fixed on our fire truck!"

## 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**.

## Francis R. "Joe" BoydDied 12 Jan 2004 at age 77 (born 26 Jan 1926).American geologist whose studies on the origins of volcanic rocks contributed to the understanding of the formation of the Earth. In Yellowstone National Park, he discovered that the volcanic eruptions that formed Yellowstone Plateau produced rocks of an unusual type, called welded tuff. In the 1960s, he helped develop the Boyd-English device, a piston-cylinder laboratory apparatus to simulate the pressure exerted on minerals deep within the Earth. Able to create a synthetic diamond, it also helps scientists determine the nature of minerals in the various rock layers of the Earth. He was a leading authority on the mantle root of the 3.5-billion-year-old Kaapvaal craton (the kernel on which a continent grows) rock in southern Africa. |

## Calculate the number 1504

NUMBERMANIA: Calculate the number 1504 using numbers [7, 4, 8, 8, 15, 309] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**Nasrin 24 T**.

## MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (1, 3, 6, 11, 14, 21, 23, 26, 28, 30, 33, 60, 67) 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**.

## Find number abc

If 612a6 - 11666 = abc80 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 1372

NUMBERMANIA: Calculate the number 1372 using numbers [8, 1, 6, 2, 90, 644] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**Nasrin 24 T**.

## Find number abc

If 79bc0 + a18c1 = 121ab1 find number abc. Multiple solutions may exist.**Nasrin 24 T**.