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Natasa Ilkic

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131. jim white 29
132. Paul Duggan 28
133. Natasa Ilkic 27
134. Thien-Trang Nguyen 27
135. Nimish Mittal 25
last 3 solved tasks
Who is the mysterious person in the picture?
What 5-digit number satisfies the following requirements? 1. No zeroes; 2. First two digits are the same; 3. Fourth digit is twice the first; 4. Last digit is twice the third; 5. Sum of all digits is 18

Edison's phonograph

In 1877, Thomas Edison announced his invention of his “talking machine” - the tin-foil cylinder recorder that preceeded the phonograph. He appears to have envisioned it as a business dictation machine. In Sep 1877, he wrote that its purpose was “to record automatically the speech of a very rapid speaker upon paper; from which he reproduces the same Speech immediately or years afterwards preserving the characteristics of the speakers voice so that persons familiar with it would at once recognize it.” The indented tin foil, however, would survive only a few playings. By the first public showing of a phonograph, which took place in New York City in early Feb 1878, its practical applications had not yet been realized.[Image: from Scientific American, 22 Dec 1877]

At Sunday School they were tea...

At Sunday School they were teaching how God created everything, including human beings. Little Johnny seemed especially intent when they told him how Eve was created out of one of Adam's ribs.
Later in the week his mother noticed him lying down as though he were ill, and she said, 'Johnny, what is the matter?'
Little Johnny responded, 'I have pain in my side. I think I'm going to have a wife.'
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