Daily Brain Teasers for Saturday, 20 April 2019
|puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ...|
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.
Would you please do me a favour?
A dentist, after completing work on a patient, came to him begging.
Dentist: Could you help me? Could you give out a few of your loudest, most painful screams?
Patient: Why? Doctor, it wasn't all that bad this time.
Dentist: There are so many people in the waiting room right now, and I don't want to miss the four o'clock ball game.
MAGIC SQUARE: Calculate A*B+CThe aim is to place the some numbers from the list (10, 11, 12, 15, 16, 18, 22, 23, 24, 30, 35, 53) 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.
Willi HennigBorn 20 Apr 1913; died 5 Nov 1976 at age 63.German zoologist who proposed cladistics (Greek=branch) for the hierarchical classification of species, based on phylogeny - the evolutionary history - of the ancestors. He wished to deal with deficiencies in the system originated by Linnaeus. Hennig published a new system in his book, Theorie der phylogenetischen Systematik in 1950. Cladistics regards all new species to have evolved by descent with modification. After an evolutionary branching, some shared derived characteristics are retained. Thus the evolutionary history of current organisms can be traced back, connecting through shared ancestors to lineages of other organisms. For example, the even-toed foot of the deer, camels, cattle, pigs and hippopotamus is a homologous similarity indicating a common ancestor.«