BRAIN TEASERS
Daily Brain Teasers

Daily Brain Teasers

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Daily Brain Teasers for Tuesday, 07 July 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 3990 using numbers [2, 7, 7, 2, 95, 423] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If c1624 + 1b6b4 = 10c2ca 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 584 using numbers [8, 2, 7, 2, 37, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c find number abc. Multiple solutions may exist.

How Old Are You?

A woman walked up to a little old man rocking in a chair on his porch.
"I couldn't help noticing how happy you look," she said. "What's your secret for a long happy life?"
"I smoke three packs of cigarettes a day," he said. "I also drink a case of whiskey a week, eat fatty foods, and never exercise."
"That's amazing," the woman said. "How old are you?'
"Twenty-six," he said.
Jokes of the day - Daily updated jokes. New jokes every day.
Daily Brain Teasers for Monday, 06 July 2026
● NUMBERMANIA: Calculate the number 3990 using numbers [2, 7, 7, 2, 95, 423] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If c1624 + 1b6b4 = 10c2ca 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 584 using numbers [8, 2, 7, 2, 37, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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, 05 July 2026
● If c1624 + 1b6b4 = 10c2ca 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 584 using numbers [8, 2, 7, 2, 37, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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 1352 using numbers [5, 2, 2, 6, 27, 601] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Daily Brain Teasers for Saturday, 04 July 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 584 using numbers [8, 2, 7, 2, 37, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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 1352 using numbers [5, 2, 2, 6, 27, 601] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 7, 8, 11, 27, 30, 31, 32, 34, 35, 42, 48) 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.
Daily Brain Teasers for Friday, 03 July 2026
● NUMBERMANIA: Calculate the number 584 using numbers [8, 2, 7, 2, 37, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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 1352 using numbers [5, 2, 2, 6, 27, 601] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 7, 8, 11, 27, 30, 31, 32, 34, 35, 42, 48) 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 c3294 + bba8c = aa9479 find number abc. Multiple solutions may exist.
Daily Brain Teasers for Thursday, 02 July 2026
● The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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 1352 using numbers [5, 2, 2, 6, 27, 601] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 7, 8, 11, 27, 30, 31, 32, 34, 35, 42, 48) 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 c3294 + bba8c = aa9479 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, 01 July 2026
● If 84b40 + 4c8ba = acb6aa 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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 1352 using numbers [5, 2, 2, 6, 27, 601] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 7, 8, 11, 27, 30, 31, 32, 34, 35, 42, 48) 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 c3294 + bba8c = aa9479 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 8628 using numbers [5, 4, 5, 4, 50, 937] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Daily Brain Teasers for Tuesday, 30 June 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 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 699a9 - 5cc46 = b658c 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 1352 using numbers [5, 2, 2, 6, 27, 601] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (3, 7, 8, 11, 27, 30, 31, 32, 34, 35, 42, 48) 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 c3294 + bba8c = aa9479 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 8628 using numbers [5, 4, 5, 4, 50, 937] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 5a9bb + 49bc9 = 1aab57 find number abc. Multiple solutions may exist.
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Helium liquefied

In 1908, Kamerlingh Onnes made helium liquid at a temperature of 4.2 K (about -269 ºC). He had worked for many years to liquify this element which persisted as a gas to the lowest temperature. Using liquid air to produce liquid hydrogen and then the hydrogen to jacket the liquification apparatus, he produced about 60 cubic centimeters of liquid helium. The gas was liquefied by compressing it, cooling it below the inversion temperature and then allowing it to expand, which causes further cooling resulting in the liquefaction of some of the gas. At his cryogenic laboratory, he had previously liquefied air (1892) in large quantities, and built a large hydrogen liquefier (1906). Onnes received the Nobel Prize in 1913 for his low temperature work.
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