Daily Brain Teasers for Wednesday, 05 November 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If abbc4 - abc70 = 2b4 find number abc. Multiple solutions may exist.
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 618
NUMBERMANIA: Calculate the number 618 using numbers [1, 9, 2, 3, 11, 621] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Smart Cat
A man absolutely hated his wife's cat and decided to get rid of him one day by driving him 20 blocks from his home and leaving him at the park.
As he was getting home, the cat was walking up the driveway.
The next day he decided to drive the cat 40 blocks away. He put the beast out and headed home.
Driving back up his driveway, there was the cat!
He kept taking the cat further and further and the cat would always beat him home. At last he decided to drive a few miles away, turn right, then left, past the bridge, then right again and another right until he reached what he thought was a safe distance from his home and left the cat there.
Hours later the man calls home to his wife: "Jen, is the cat there?"
"Yes", the wife answers, "why do you ask?"
Frustrated, the man answered, "Put that son of a bitch on the phone, I'm lost and need directions!"
Find number abc
If bc7bc - 17740 = 4a01c find number abc. Multiple solutions may exist.
Alfred Sherwood RomerDied 5 Nov 1973 at age 78 (born 28 Dec 1894). U.S. paleontologist who studied the evolution of early vertebrates in biological terms of comparative anatomy and embryology. He researched muscle and limb evolution, the development and evolutionary history of cartilage and bone, and the structure and function of the nervous system. Further, he traced the basic structural and functional changes that took place during the evolution of fishes to primitive terrestrial vertebrates and from these to modern vertebrates. He linked the form and function of animals to their environment. Romer was one of the first vertebrate palaeontologists to defend the idea of continental drift, having found striking similarities between Permian reptiles in western Texas and in Czechoslovakia.« |
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 6367
NUMBERMANIA: Calculate the number 6367 using numbers [9, 1, 1, 3, 87, 631] 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 (13, 15, 16, 18, 20, 23, 37, 39, 44, 61) 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 2baa4 + c992c = 10ba11 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 9167
NUMBERMANIA: Calculate the number 9167 using numbers [4, 3, 9, 7, 37, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
