Daily Brain Teasers for Tuesday, 20 May 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
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 679
NUMBERMANIA: Calculate the number 679 using numbers [1, 2, 7, 2, 76, 599] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 8caac + 26260 = 111b0c find number abc. Multiple solutions may exist.
The Sailor and the computer
A retired sailor purchased a computer and began to learn all about computing. Being a sailor, he was used to addressing his ships as "She" or "Her". But was unsure what was proper for computers.
To solve his dilemma, he set up two groups of computer experts: one group was male, and the other group was female.
The group of women reported that computers should be refereed to as "HE" because:
1. In order to get their attention you have to turn them on. 2. They have a lot of data but are still clueless. 3. They are supposed to help you solve problems but half the time they are the problem. 4. As soon as you commit to one, you realise that if you had waited a little longer, you could have had a newer and better model.
The group of men reported that computers should be refered to as "SHE" because:
1. No one but the creator understands their logic. 2. The native language they use to talk to other computers is incomprehensible to anyone else. 3. Even your smallest mistakes are stored in long term memory for later retrieval. 4. As soon as you make a commitment to one, you find yourself spending half your paycheck on accessories for it.
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.
Ferdinand ZirkelBorn 20 May 1838; died 12 Jun 1912 at age 74.German geologist and micropetrographist who was a pioneer in microscopic petrography, the study of rock minerals by viewing thin slices of rock under a microscope and noting their optical characteristics. He travelled in the U.S. through the Park Range mountains of the Continental Divide with the King Survey in 1871, and his name was given to the 12,180 foot tall peak as Mount Zirkel, in northwestern Colorado. The King Survey was one of the four “Great Surveys,”the federally sponsored expeditions to the West resumed after the Civil War. These differed from their pre-Civil War surveys in their greater inclusion of civilian specialists, particularly scientists. Zirkel wrote one of the 7 volumes of the King expedition Report, Vol. VI: Microscopial Petrography (1876). |
Calculate the number 6472
NUMBERMANIA: Calculate the number 6472 using numbers [1, 5, 7, 3, 56, 754] 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 (11, 13, 15, 18, 20, 22, 25, 27, 29, 60, 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.
Find number abc
If 9bb2c - 8ba1b = 1aba9 find number abc. Multiple solutions may exist.
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.
Calculate the number 1489
NUMBERMANIA: Calculate the number 1489 using numbers [9, 3, 8, 5, 51, 835] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If a5abc + 302ca = 12b213 find number abc. Multiple solutions may exist.
