Daily Brain Teasers for Sunday, 18 October 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If 97bc6 - 699ab = 2794b find number abc. Multiple solutions may exist.
Calculate the number 3519
NUMBERMANIA: Calculate the number 3519 using numbers [7, 6, 8, 7, 30, 221] 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 (5, 7, 13, 14, 16, 20, 22, 38, 40, 46, 57) 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.
Walking on Water
A rabbi, priest, and a minister are out fishing in a boat on a big lake when the priest realizes that he has to go to the bathroom. Not wanting to disturb the fishing of the others in the boat by having them take him to shore, he gets out of the boat and walks across the water to do his business and then returns to the boat.A little while later the minister has to go also and he does the same. He walks across the water, does his business and returns across the water to the boat.
Finally the rabbi feels the urge to go to the bathroom too, so he climbs out of the boat. But instead of walking across the water, he falls into the water and starts to wildly splash around. The priest and the minister finally drag the rabbi back into the boat and the priest turns to the minister and says, "Maybe we should have told him where the rocks were."
Find number abc
If c02aa + 74aba = 12c2b8 find number abc. Multiple solutions may exist.
Household electricityIn 1878, Edison made electricity available for household usage. |
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 3934
NUMBERMANIA: Calculate the number 3934 using numbers [1, 6, 5, 4, 97, 592] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 644b1 + 9c6ac = 162baa 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 443
NUMBERMANIA: Calculate the number 443 using numbers [2, 9, 7, 1, 22, 154] 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 (9, 14, 16, 22, 26, 28, 29, 31, 34, 37, 64, 68, 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.
