Daily Brain Teasers for Sunday, 31 May 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If baacc + 2a311 = 122baa 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 7592
NUMBERMANIA: Calculate the number 7592 using numbers [5, 8, 9, 3, 42, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Magic Window
Two guys are sitting at a bar.
"You know why I love this bar?" asks the first one.
"No," says the second guy. "Why do you love this bar?"
The first guy points at the window, which is six stories above the ground. "It has a magic window," he says. "You jump out of that window, and you can fly."
The second guy just shakes his head. "Shut up."
"No," says the first guy. "It really is a magic window. I'll prove it to you."
So the first guy gets down from his bar stool, runs at the window, jumps out of it, and flies. He flies around the building twice, up and down, and finally comes back in. He walks to his barstool, and takes a sip of his drink. "See?" he says.
The first guy looks confused. He looks at his drink. "I must be drunk," he says.
"Still don't believe me?" asks the second guy. "I'll show you again." He gets down from his stool, runs and jumps out of the window again. This time he performs some impressive aerial acrobatics, spins, flips, dives. When he finally comes back in, the second guy is staring at him, slack-jawed.
"Wow," says the second guy. "A magic window." He gets off his barstool, takes a running jump out of the window, and promptly plummets to his death. The first guy starts laughing.
The bartender comes over to the first guy with a stern look on his face. "Superman, you're a real asshole when you're drunk."
MAGIC SQUARE: Calculate A-B-C
The aim is to place the some numbers from the list (16, 17, 22, 28, 29, 34, 45, 60, 61, 66) 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.
Sir Samuel BenthamDied 31 May 1831 at age 74 (born 11 Jan 1757).British engineer, naval architect, and navy official in Russia (1780-91) and England (from 1795) who was an early advocate of explosive-shell weapons for warships. In 1780, he was sent by the Admiralty to visit dockyards in Northern Europe. In Russia he improved management of Prince Potemkin's factories. While he was in Russia he built and equipped a flotilla of ships and distinguished himself in a victorious naval battle with the Turks. Using special guns that he had built and mounted in the ships, shells were fired for the first time in naval warfare. There also, he began his ideas for machines which worked by unskilled labour, could produce the same results as skilled workmen. |
Find number abc
If c89a9 - 1b92c = 2104a find number abc. Multiple solutions may exist.
Find number abc
If 12bbc + 225c6 = bcaa0 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 1314
NUMBERMANIA: Calculate the number 1314 using numbers [9, 8, 4, 9, 68, 829] 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 (14, 15, 16, 23, 24, 25, 30, 57, 58, 69, 70, 71) 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 8cb4a + 9cab3 = 1ac9ac find number abc. Multiple solutions may exist.
