Daily Brain Teasers for Sunday, 30 August 2020
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If 3bba4 - 2c008 = 5b8c 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 1125
NUMBERMANIA: Calculate the number 1125 using numbers [5, 4, 3, 3, 43, 125] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
The hero
Joe is at the Pearly Gates waiting to be admitted while St. Peter is leafing through his files to see if Joe is worthy of entry.
"Joe," says St. Pete, "I can't see that you've done anything really bad in your life but I can't see that you've done anything really good that would qualify you for Heaven. Can you tell me ANY good deed you've ever done?"
Joe thinks for a moment and says "Sure. I was driving through a bad part of town when I saw about 50 biker guys assaulting this poor girl. I slammed on my brakes, grabbed a tire iron, and walked up to this big guy who seemed to be the leader. All these guys let the girl run away and they formed a circle around me to see what I was gonna do. I laid that tire iron right across his head and he dropped like a stone. Then I turned and yelled to the rest of them "If I ever see you guys around this town again, I'll give you a real lesson in pain."
"Wow" says St. Peter, "I guess you really do qualify for Heaven. Tell me, when did this happen?"
"Oh", says Joe, "about two minutes ago."
MAGIC SQUARE: Calculate A*B-C
The aim is to place the some numbers from the list (4, 7, 8, 14, 17, 18, 32, 36, 39, 40, 84) 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 Ernest RutherfordBorn 30 Aug 1871; died 19 Oct 1937 at age 66. (1st Baron Rutherford of Nelson) Sir Ernest Rutherford was a New Zealand-English physicist who laid the groundwork for the development of nuclear physics. He worked under Sir J. J. Thomson at Cambridge University (1895-98). Then he collaborated with Frederick Soddy in studying radioactivity. On 1 Sep 1898 he dateda paper naming alpha particles and beta particles (Gamma radiation was discovered in 1900 by Paul Villard.) the following year. In 1905, with Soddy, he announced that radioactive decay involves a series of transformations. In 1907, with Hans Geiger and Ernest Marsden, he devised the alpha-particle scattering experiment that led in 1911 to the discovery of the atomic nucleus. In 1919 he achieved the artificial splitting of light atoms. In 1908 he was awarded the Nobel Prize for Chemistry. |
Find number abc
If abb84 + 4a895 = cca9a9 find number abc. Multiple solutions may exist. What a winning 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 1393
NUMBERMANIA: Calculate the number 1393 using numbers [7, 8, 1, 7, 12, 164] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
If bbcc5 + ca4a9 = 104a24 find number abc. Multiple solutions may exist. What a winning 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 5684
NUMBERMANIA: Calculate the number 5684 using numbers [9, 3, 7, 9, 15, 347] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
