Daily Brain Teasers for Tuesday, 05 August 2025
|
puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
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.
Calculate the number 1204
NUMBERMANIA: Calculate the number 1204 using numbers [6, 4, 2, 6, 64, 240] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If ca167 + ab0ac = 76b10 find number abc. Multiple solutions may exist.
Parking the car....
Joe and Joan were sitting down to their usual morning cup of coffee listening to the weather report on the radio. "There will be 3 to 5 inches of snow today, and a snow emergency has been declared," the weather report said.
"You must park your cars on the odd numbered side of the streets."
Joe said, "Jeez, okay," and got up from his coffee.
The next day they were sitting down with their morning cups of coffee. The weather forecast was, "There will be 2 to 4 inches of snow today, and a snow emergency has been declared.
You must park your cars on the even numbered side of the streets." Again Joe replied, "Jeez, okay," and got up from his coffee.
Two days later, again they're sitting down with their cups of coffee and the weather forecast said, "There will be 6 to 8 inches of snow today, and a snow emergency has been declared. You must park your cars on the..." and the power went out and Joe didn't get the rest of the instructions.
He turned to Joan, "Jeez, what am I going to do now, Joan?"
Joan replied, "Aw, Joe, just leave the car in the darned garage today."
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.
Ewald HeringBorn 5 Aug 1834; died 26 Jan 1918 at age 83.Karl Ewald Konstantin Hering was a German physiologist and psychologist whose chief work concerned the physiology of colour perception. He taught at several universities. Hering challenged the colour-vision theory of Hermann von Helmholtz. Visual sensations, according to Hering's view, were due to three colour receptors responding in an “opponent” fashion in colour-pairs (white/black, yellow/blue, and red/green) to take account of the after-images of colours. Helmholtz had advocated the three fibre, three color theory (red, green and blue). Hering also is known for a classic optical illusion.[Image: Hering (inset) with his colour-blindness apparatus] |
Calculate the number 2793
NUMBERMANIA: Calculate the number 2793 using numbers [3, 8, 5, 4, 56, 440] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
MAGIC SQUARE: Calculate A*B-C
The aim is to place the some numbers from the list (3, 4, 6, 26, 27, 29, 40, 63, 64, 66, 73) 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.
Find number abc
If b8c55 + 8c32c = c7b47a find number abc. Multiple solutions may exist.
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.
Calculate the number 1132
NUMBERMANIA: Calculate the number 1132 using numbers [5, 3, 2, 2, 93, 977] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If c7caa - b8c3a = ac030 find number abc. Multiple solutions may exist.
