Which is a winning combination of digits?
[7693] Which is a winning combination of digits? - 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. - #brainteasers #mastermind - Correct Answers: 5
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Which is a winning combination of digits?

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: 5
#brainteasers #mastermind
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Getting tough

My grandfather worked in a blacksmith shop when he was a boy, and he used to tell me, when I was a little boy myself, how he had toughened himself up so he could stand the rigors of blacksmithing.

One story was how he had developed his arm and shoulders muscles. He said he would stand outside behind the house and, with a 5-pound potato sack in each hand, he would extend his arms straight out to his sides and hold them there as long as he could.

After awhile, he tried 10-pound potato sacks, then 50-pound potato sacks. Finally, he got to where he could lift a 100-pound potato sack in each hand and hold his arms straight out for more than a full minute!

Next, he started putting potatoes in the sacks.

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Fred Whipple

Born 5 Nov 1906; died 30 Aug 2004 at age 97.Fred Lawrence Whipple was an American astronomer who proposed the “dirty snowball” model for comet nuclei. In the 1930s, using a new, two-station method of photography, he determined meteor trajectories and found that nearly all visible meteors are made up of fragile material from comets, and that none come from beyond the solar system. Whipple suggested (1950) that comets have icy cores inside thin insulating layers of dirt, and that jets of material ejected as a result of solar heating were the cause of orbital changes. This model was confirmed in 1986 when spacecraft flew past comet Halley. Whipple's work on tracking artificial satellites led to improved knowledge of the shape of the earth and greatly improved positions on earth.
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