Daily Brain Teasers for Sunday, 31 January 2021
puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If 8013b - 35a1b = bbbc0 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 5847
NUMBERMANIA: Calculate the number 5847 using numbers [7, 6, 3, 9, 39, 985] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.100 pound pig
The farmer nodded, walked out into the sty, bent over and picked up a pig by its tail with his teeth. The farmer said, "This one will go a little over a 100".
Astonished the Yankee said, "Who are you trying to fool? You can't weigh a pig that way".
The farmer laughed and called to his young son, "Boy, come over here and weigh that pig for this man".
The boy obliged by bending over and picking up the pig by its tail with his teeth. Turning to his father the boy said, " This here pig weighs about 100 pounds".
The Yankee was having no part of this so in order to convince him the farmer told his son to go to the house and get his mother so she could weigh the pig. After a short delay the son returned and said, "Ma says she will be right down after she's finished weighing the mailman".
MAGIC SQUARE: Calculate A-B-C
The aim is to place the some numbers from the list (1, 2, 12, 21, 22, 32, 40, 41, 51, 87) 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.Carl von VoitDied 31 Jan 1908 at age 76 (born 31 Oct 1831).German physiologist who measured gross metabolism in mammals and humans. He made the first determination of the amount of fat, protein, and carbohydrate broken down by the body; proved the equality of total input of carbon, hydrogen, nitrogen, and oxygen with output of these elements in metabolic products excreted and exhaled by animals on constant diets; founded study of metabolic activity as guide to disease; disproved idea that protein is the source of muscle energy; investigated nutritional value of many substances including asparagine and peptones, which led to discovery of essential amino acids; devised first calorimeter large enough for studies of human metabolism. His collaboration with Max von Pettenkofer helped establish modern nutritional science. |