BRAIN TEASERS

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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.

Correct answers: 70

The first user who solved this task is Djordje Timotijevic.

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Chatting On The Plane

A man was recently flying to New York. He decided to strike up a conversation with his seat mate.
"I've got a great policeman joke. Would you like to hear it?"
"I should let you know first that I am a policeman."
"That's OK. I'll tell it really slow!"

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Andromeda outside Milky way

In 1924, a meeting of scientists began in Washington, D.C. On its last day, 1 Jan 1925, its main event was a paper read by H. N. Russell on behalf of the absent author, Edwin Hubble. Although titled about Cepheid Variables, Hubble's paper gave the first proof that Andromeda was a separate galactic system—an “island universe,” far beyond our own Milky Way, and equally large. Previously, scientists couldn't tell if nebulae (fuzzy clouds of light) were within the Milky Way or not. Hubble measured the distances to Cepheid stars in the Andromeda nebula and showed it was a hundred thousand times as far away as the nearest stars—proof it was a separate galaxy. He wrote a letter to Harlow Shapley on 19 Feb 1923 about his first measurement. New York Times (22 Nov 1924) told the public, before the meeting.«

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