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James Lillard

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53. Pratima Singh 215
54. Anas Diab 213
55. James Lillard 202
56. ভাস্কৰ জ্যোতি 202
57. Dejan Radovanović 202
last 3 solved tasks
Which number replaces the question mark?
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.
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.

Per Teodor Cleve

Died 18 Jun 1905 at age 65 (born 10 Feb 1840).Swedish chemist and geologist who who discovered the elements holmium and thulium. He was the thirteenth child in his family. In 1874, Cleve concluded that didymium was in fact two elements (this was proved in 1885 and the two elements named neodymium and praseodymium.) In 1879, he showed that scandium (discovered by Lars Nilson), was in fact the eka-boron predicted by Dmitri Mendeleev in his periodic table. Also in 1879, working with a sample of erbia that had all traces of scandia and ytterbia removed, he found two new earths, which he named holmium, after Stockholm, and thulium, after the old name for Scandinavia. (Holmium, too was a mixture. In 1886, Lecoq de Boisbaudran discovered that it contained the new element dysprosium.)

The worst two Winters

The worst two Winters of the 20th century . . . Mike and Bernie.

Victor Borges (1909-2000)

Picture: AP

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