Calculate the number 1721
[834] Calculate the number 1721 - NUMBERMANIA: Calculate the number 1721 using numbers [2, 7, 1, 6, 41, 745] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 28 - The first user who solved this task is Sanja Šabović
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Calculate the number 1721

NUMBERMANIA: Calculate the number 1721 using numbers [2, 7, 1, 6, 41, 745] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 28
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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I always take my wife morning tea in my pajamas

I always take my wife morning tea in my pajamas, but is she grateful? . . . No, she says she'd rather have it in a cup.

Eric Morecambe (1926-1984), seen here with comedy partner Ernie Wise

Picture: Rex Features

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Magnetising metals

In 1744, Gowan Knight presented his research on magnetising metals to the Royal Society. The method he discovered for permanently magnetising hard steels. The use of steel instead of soft iron greatly improved the otherwise crude compass needles used by England's Royal Navy, which then had a much longer magnetized life. Knight took out a patent for his compass in 1766. He devised better ways to suspend compass needles, and introduced the rhomboid shape now common for compass needles.Reference: Philosophical Trans., No. 474, p. 161
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