BRAIN TEASERS

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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Correct answers: 53

The first user who solved this task is Irena Katic Kuzmanovic.

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Two-timer

Mrs. Donnell said to her maid: "Oh Mary, I suspect that my husband is having an affair with his secretary."

"I don't believe it," Mary snapped: "you're just saying that to make me jealous."

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U.S. Standards Bureau

In 1901, the U.S. National Bureau of Standards became effective. It had been established under an Act of Congress (31 Stat. 1449) approved 3 Mar 1901 that expanded the functions of the Office of Standard Weights and Measures, previously part of the Coast and Geodetic Survey. Its duties included the custody of the standards; comparison of standards; construction of standards; testing and calibration of standard measuring apparatus; and determination of physical constants and the properties of materials which are of great importance to scientific or manufacturing interests. The Bureau became the National Institute of Standards and Technology (N.I.S.T) in 1988.«*

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