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Trần Triệu Tân

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270. Adam Saville 7
271. Michael Dixon 7
272. Trần Triệu Tân 7
273. Cường Nguyễn 7
274. Himanshu Shekhar 7
last 3 solved tasks
If b9bb7 - b9cbc = ca6 find number abc. Multiple solutions may exist.
In the following circles, the four outer numbers are used to calculate the number in the middle. Can you figure out the rule to determine what number should replace the question mark in the third circle?
How Many Squares Are There?

Robert Hofstadter

Died 17 Nov 1990 at age 75 (born 5 Feb 1915).American scientist who was a joint recipient of the Nobel Prize for Physics in 1961 for his investigations in which he measured the sizes of the neutron and proton in the nuclei of atoms. He revealed the hitherto unknown structure of these particles and helped create an identifying order for subatomic particles. He also correctly predicted the existence of the omega-meson and rho-meson. He also studied controlled nuclear fission. Hofstadter was one of the driving forces behind the creation of the Stanford Linear Accelerator. He also made substantial contributions to gamma ray spectroscopy, leading to the use of radioactive tracers to locate tumors and other disorders. (He shared the prize with Rudolf Ludwig Mössbauer of Germany.)

Now Don't Get Nervous

Patient 1: “Why did you run away from the operation table?”

Patient 2: “The nurse was repeatedly saying ‘don’t get nervous’, ‘don’t be afraid’, ‘be strong’, ‘this is a small operation only’, things like that.”

Patient 1: “So what was wrong in that? Why were you so afraid?”

Patient 2: “She was talking to the surgeon!”

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