Calculate the number 690
[182] Calculate the number 690 - NUMBERMANIA: Calculate the number 690 using numbers [7, 8, 4, 5, 10, 100] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 53 - The first user who solved this task is Sanja Šabović
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Calculate the number 690

NUMBERMANIA: Calculate the number 690 using numbers [7, 8, 4, 5, 10, 100] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 53
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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What day is it?

Over breakfast one morning, a woman said to her husband, "I bet you don't know what day this is."

"Of course I do," he indignantly answered, getting up from the table and going out the door to the office.

At 10am, the doorbell rang. When the woman opened the door, she was handed a box containing a dozen long-stemmed red roses. At 1pm, a foil-wrapped, two-pound box of her favorite chocolates arrived. Later, a boutique delivered a designer dress.

The woman couldn't wait for her husband to come home. When he did, she exclaimed, "First the flowers, then the chocolates and then the dress! I've never had a more wonderful Groundhog Day in my life!"

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Earliest Record Solar Eclipse

In 709 BC, the earliest record of a confirmed total solar eclipse was written in China. From: Ch'un-ch'iu, book I: "Duke Huan, 3rd year, 7th month, day jen-ch'en, the first day (of the month). The Sun was eclipsed and it was total." This is the earliest direct allusion to a complete obscuration of the Sun in any civilisation. The recorded date, when reduced to the Julian calendar, agrees exactly with that of a computed solar eclipse. Reference to the same eclipse appears in the Han-shu ('History of the Former Han Dynasty') (Chinese, 1st century AD): "...the eclipse threaded centrally through the Sun; above and below it was yellow." Earlier Chinese writings that refer to an eclipse do so without noting totality.
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