Calculate the number 5557
[3012] Calculate the number 5557 - NUMBERMANIA: Calculate the number 5557 using numbers [8, 2, 1, 3, 71, 547] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 33 - The first user who solved this task is Snezana Milanovic
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Calculate the number 5557

NUMBERMANIA: Calculate the number 5557 using numbers [8, 2, 1, 3, 71, 547] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 33
The first user who solved this task is Snezana Milanovic.
#brainteasers #math #numbermania
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Why are you crying?

Two guys were sitting outside a medical clinic. One of them was crying, tears were pouring down his face.

The other guy asked, "Why are you crying?"

The first one replied, "I came here for blood test."

The second one asked, "So? Why are you crying? Are you afraid?"

The first guy replied, "No. Not that. During the blood test they cut my finger."

Hearing this, the second one started crying.

The first one was astonished and asked the other, "Why are you crying?"

Then the second guy replied, "I have come for a urine test."

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Electric motor

In 1904, the first direct current, interpole, electric motor to be patented in the U.S. was issued to Mathias Pfatischer of Phildadelphia, Pennsylvania under the title "Variable Speed Motor" (No.775,310). His improvement was to "effect commutation without sparking, with a variable load as well as at variable speed and which is capable of rotation in either direction." The new design added auxiliary-field pole-pieces which were small as compared to the main pole-pieces.«
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