Calculate the number 1100
[5770] Calculate the number 1100 - NUMBERMANIA: Calculate the number 1100 using numbers [8, 7, 9, 3, 30, 669] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 21 - The first user who solved this task is Thinh Ddh
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Calculate the number 1100

NUMBERMANIA: Calculate the number 1100 using numbers [8, 7, 9, 3, 30, 669] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 21
The first user who solved this task is Thinh Ddh.
#brainteasers #math #numbermania
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Getting to Heaven from the Post Office

A preacher, newly called to a small country town, needed to mail a letter. Passing a young boy on the street, the pastor asked where he could find the post office.
After getting his answer, the minister thanked the boy and said, “If you’ll come to the community church this evening, you can hear me tell everyone how to get to heaven.”
“I don’t know, sir,” the boy replied. “You don’t even know how to get to the post office!”
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Heinrich Daniel Ruhmkorff

Born 15 Jan 1803; died 20 Dec 1877 at age 74.German mechanic, instrument maker and inventor whodevised the Ruhmkorff coil, his version of the induction coil (after Nicholas Joseph Callan's earlier invention of 1836). Ruhmkorff's induction coil could produce sparks over 1 ft (30 cm) in length, and became popular for energizing discharge tubes, especially those for generating X-rays (discovered by Wilhelm Röntgen, on 8 Nov 1895). The device uses a primary coil and iron core concentric with a secondary coil with a large number of turns. By using a contact breaker giving abrupt and rapid interruptions in the primary coil current, a concentrated, changing magnetic field produced a high voltage in the secondary coil. He also invented a thermo-electric battery in 1844.«
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