BRAIN TEASERS
Daily Brain Teasers

Daily Brain Teasers

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ...
Daily Brain Teasers for Monday, 11 May 2026
● NUMBERMANIA: Calculate the number 595 using numbers [2, 1, 8, 7, 66, 516] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 39094 + 5aa93 = 90b8c find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 4333 using numbers [3, 2, 5, 4, 60, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (1, 10, 12, 13, 15, 16, 19, 62, 64, 68) 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. ● If 9b003 + 9036b = cab36a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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.
Daily Brain Teasers for Sunday, 10 May 2026
● If 39094 + 5aa93 = 90b8c find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 4333 using numbers [3, 2, 5, 4, 60, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (1, 10, 12, 13, 15, 16, 19, 62, 64, 68) 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. ● If 9b003 + 9036b = cab36a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Daily Brain Teasers for Saturday, 09 May 2026
● 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. ● NUMBERMANIA: Calculate the number 4333 using numbers [3, 2, 5, 4, 60, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (1, 10, 12, 13, 15, 16, 19, 62, 64, 68) 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. ● If 9b003 + 9036b = cab36a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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.

A boy had reached four without...

A boy had reached four without giving up the habit of sucking his thumb, though his mother had tried everything from bribery to reasoning to painting it with lemon juice to discourage the habit. Finally she tried threats, warning her son that, "If you don't stop sucking your thumb, your stomach is going to blow up like a balloon." Later that day, walking in the park, mother and son saw a pregnant woman sitting on a bench. The four-year-old considered her gravely for a minute, then spoke to her saying, "Uh-oh ... I know what you've been doing."
Jokes of the day - Daily updated jokes. New jokes every day.
Daily Brain Teasers for Friday, 08 May 2026
● NUMBERMANIA: Calculate the number 4333 using numbers [3, 2, 5, 4, 60, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (1, 10, 12, 13, 15, 16, 19, 62, 64, 68) 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. ● If 9b003 + 9036b = cab36a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist.
Daily Brain Teasers for Thursday, 07 May 2026
● The aim is to place the some numbers from the list (1, 10, 12, 13, 15, 16, 19, 62, 64, 68) 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. ● If 9b003 + 9036b = cab36a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist. ● 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.
Daily Brain Teasers for Wednesday, 06 May 2026
● If 9b003 + 9036b = cab36a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6672 using numbers [5, 8, 6, 2, 21, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Daily Brain Teasers for Tuesday, 05 May 2026
● 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. ● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6672 using numbers [5, 8, 6, 2, 21, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If b5b29 - 69bac = c599b find number abc. Multiple solutions may exist.
Daily Brain Teasers for Monday, 04 May 2026
● NUMBERMANIA: Calculate the number 994 using numbers [3, 9, 3, 8, 92, 555] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6672 using numbers [5, 8, 6, 2, 21, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If b5b29 - 69bac = c599b find number abc. Multiple solutions may exist. ● 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.
Daily Brain Teasers for Sunday, 03 May 2026
● If 5ca4a - bbc8c = 34b53 find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6672 using numbers [5, 8, 6, 2, 21, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If b5b29 - 69bac = c599b find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 789 using numbers [5, 5, 7, 5, 14, 546] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Daily Brain Teasers for Saturday, 02 May 2026
● 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. ● NUMBERMANIA: Calculate the number 6943 using numbers [7, 5, 3, 7, 14, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (7, 8, 15, 16, 23, 24, 31, 65, 66, 73, 77) 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. ● If 964ba - 9bc90 = 4a2a find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 6672 using numbers [5, 8, 6, 2, 21, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If b5b29 - 69bac = c599b find number abc. Multiple solutions may exist. ● 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. ● NUMBERMANIA: Calculate the number 789 using numbers [5, 5, 7, 5, 14, 546] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (2, 5, 8, 13, 16, 28, 31, 32, 36, 44, 47, 52, 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.
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Planetarium

In 1930, the Adler Planetarium and Astronomical Museum was opened to the public in Chicago, Illinois. A program using the Zeiss II star projector was presented by Prof. Philip Fox, who resigned from the staff of Northwestern Observatory to take charge of the new $1 million facility. Housed in a granite building, it was donated to the city by Max Adler, retired vice president of Sears, Roebuck & Co. He had been so impressed when he previously visited the world's first planetarium at the Deutsches Museum, Munich, Germany, that he resolved to construct America's first modern planetarium open to the public in his home city. Its site was within the fairgrounds of the Century of Progress Exposition in 1933-34, and was an outstanding attraction.«[Image left: The Zeiss II star projector used from 1930 until replaced in 1971 by a Zeiss IV projector. Image right: exterior]
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