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Calculate the number 1281

NUMBERMANIA: Calculate the number 1281 using numbers [2, 4, 1, 5, 72, 715] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 18

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #numbermania

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Christmas QA Jokes

Q. What do Santa’s elves learn in school?

A. The Elfabet.

Q. What does Santa like to do in the garden?

A. Hoe, hoe, hoe!

Q: What do Santa’s elves drive?

A: Minivans.

Q: What do Santa’s elves drink?

A: Minnesoda.

Q: What is Claustrophobia?

A: The fear of Santa Claus.

Q: What breakfast cereal does Frosty the Snowman eat?

A: Snowflakes.

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Samuel Williams

Died 2 Jan 1817 at age 73 (born 23 Apr 1743).American natural philosopher and clergyman who organized the first expedition of its kind in the U.S. (departing on 9 Oct 1780) to observe a total solar eclipse in Penobscot Bay, Maine, although it was held by the British enemy. The eclipse was very slightly less than being total, and he is believed to be the first to observe the “ Baily's Beads” phenomenon seen along the sun's last sliver. Previously, with John Winthrop (under whom he studied) he travelled to St. John's, Newfoundland (1761) to observer the Transit of Venus. When Wintrop died, Williams succeeded him (1779) as the Hollis Professor of Mathematics and Natural Philosophy at Harvard University. He researched and taught astronomy, meteorology, and magnetism. He resigned in June 1788. He also engaged in state boundary surveys: NY and Mass. (1785-88), and Vermont and Canada (1795).«[Image drawn from a miniature.]

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