Calculate the number 989
[6030] Calculate the number 989 - NUMBERMANIA: Calculate the number 989 using numbers [5, 2, 5, 7, 40, 882] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 12 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 989

NUMBERMANIA: Calculate the number 989 using numbers [5, 2, 5, 7, 40, 882] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 12
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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Exciting Period

A kindergarten class had a homework assignment to find out about something exciting and relate it to the class the next day. When the time came to present what they'd found, the first little boy walked up to the front of the class made a small white dot on the blackboard and sat back down. Puzzled, the teacher asked him just what it was.
"It's a period,'' said the little boy.
"Well, I can see that,'' she said, ''but what is so exciting about a period?''
''Damned if I know,'' said the little boy, ''but this morning my sister was missing one, Daddy had a heart attack, Mommy fainted, and the man next door shot himself."

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Samuel Heinrich Schwabe

Died 11 Apr 1875 at age 85 (born 25 Oct 1789).Amateur German astronomer who discovered the 10-year sunspot activity cycle. Schwabe had been looking for possible intramercurial planets. From 11 Oct 1825, for 42 years, he observed the Sun virtually every day that the weather allowed. In doing so he accumulated volumes of sunspot drawings, the idea being to detect his hypothetical planet as it passed across the solar disk, without confusion with small sunspots. Schwabe did not discover any new planet. Instead, he published his results in 1842 that his 17 years of nearly continuous sunspot observations revealed a 10-year periodicity in the number of sunspots visible on the solar disk. Schwabe also made (1831) the first known detailed drawing of the Great Red Spot on Jupiter.
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