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Calculate the number 1566

NUMBERMANIA: Calculate the number 1566 using numbers [9, 6, 2, 1, 46, 229] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 13

The first user who solved this task is Nasrin 24 T.

#brainteasers #math #numbermania

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Physical Exam

The doctor has just finished giving the young man a thorough physical examination.

"The best thing for you to do," the M.D. said, "is give up drinking and smoking, get to bed early and stay away from women."

"Doc, I don't deserve the best," said the patient. "What's second best?"

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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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