Daily Brain Teasers for Sunday, 28 April 2019
|puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ...|
Find the right combinationThe 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.
What did the seal say when it swam into a concrete wall?
Q: What did the seal say when it swam into a concrete wall?
Q: What does a seal get from sitting on the ice too long at the zoo?
Q: What did the baby seal say when it was late?
A: "I would have been here sooner, but my iceberg hit a ship."
Q: What's a balanced diet for a polar bear?
A: A seal in each paw!
MAGIC SQUARE: Calculate A-B+CThe aim is to place the some numbers from the list (9, 13, 15, 16, 18, 20, 21, 33, 35, 36, 75, 90) 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.
Edouard van BenedenDied 28 Apr 1910 at age 64 (born 5 Mar 1846).Edouard Joseph Louis-Marie van Beneden was a Belgian embryologist and cytologist best known for his discoveries concerning fertilization in sex cells and chromosome numbers in body cells. From 1883, he experimented with the worm Ascaris megalocephala, an intestinal worm found in horses. His studies showed that sexual fertilization results from the union of two different cell half-nuclei. Thus a new single cell is created with its number of chromosomes derived as one-half from the male sperm and the other half from the female egg. Van Beneden also determined that the chromosome number is constant for every body cell of a species. His theory of embryo formation in mammals became a standard scientific principle.