Calculate the number 2140
[1845] Calculate the number 2140 - NUMBERMANIA: Calculate the number 2140 using numbers [5, 7, 9, 1, 25, 177] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 41 - The first user who solved this task is Sanja Šabović
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Calculate the number 2140

NUMBERMANIA: Calculate the number 2140 using numbers [5, 7, 9, 1, 25, 177] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 41
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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Once there was a golfer whose...

Once there was a golfer whose drive landed on an anthill. Rather than move the ball, he decided to hit it where it lay. He gave a mighty swing. Clouds of dirt and sand and ants exploded from the spot. Everything but the golfball. It sat in the same spot.
So he lined up and tried another shot. Clouds of dirt and sand and ants went flying again. The golf ball didn't even wiggle.
Two ants survived. One dazed ant said to the other, "Whoa! What are we going to do?"
Said the other ant: "I don't know about you, but I'm going to get on the ball."
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Valdemar Poulsen

Born 23 Nov 1869; died 23 Jul 1942 at age 72.Danish engineer who in 1903 developed the first device for generating continuous radio waves, thus aiding the development of radio broadcasting. His arc transmitter increased the frequency range of Duddell's Singing Arc (1900) from the audio range to radio waves, enabling speech to be transmitted up to a radius of 150 miles. By 1920 the Poulsen Arc transmitter was as powerful as 1000kW with ranges of up to 2,500 miles. An earlier invention was the Telegraphone, for which he filed a patent in Denmark on 1 Dec 1898. This was the first device in history to use magnetic sound recording, although this invention remained commercially impractical due to low sound output until the advent of vacuum tube amplifiers in the 1930s.[Biog. Dict. of the Hist. of Tech. gives date of death 23 Jul 1942. DSB and EB give Jul 1942.]
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