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Islam Usman

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160
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158. Thien-Trang Nguyen 27
159. Atila Tot 27
160. Islam Usman 26
161. Nimish Mittal 25
162. C J H 25
last 3 solved tasks
MATH PUZZLE: Can you replace the question mark with a number?
How many cubes are there?
MATH PUZZLE: Can you replace the question mark with a number?

Edison patent

In 1907, Thomas A. Edison was issued a patent for an "Apparatus for Grinding and Separating Fine Materials" (No. 841,677).

Math Teacher

Math Teacher: "If I have 5 bottles in one hand and 6 in the other hand, what do I have?"
Student: "A drinking problem."
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