Calculate A*B-C+D
[6439] Calculate A*B-C+D - Look at the series (10, 19, 36, D, C, A, 520, 1033, 2058, 4107, B, 16397, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A*B-C+D! - #brainteasers #math - Correct Answers: 30 - The first user who solved this task is Nasrin 24 T
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Calculate A*B-C+D

Look at the series (10, 19, 36, D, C, A, 520, 1033, 2058, 4107, B, 16397, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A*B-C+D!
Correct answers: 30
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Terrible news

This guy was sitting in his attorney's office. His lawyer says: "Do you want the bad news first or the terrible news?"

"Give me the bad news first," he says.

"Your wife found a picture worth a half-million dollars," his lawyer informs him.

"That's the bad news?" asks the man incredulously. "I can't wait to hear the terrible news."

"The terrible news is that it's of you and your secretary."

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Deuterium

In 1933, Ernest Rutherford suggested the names diplogen for the newly discovered heavy hydrogen isotope and diplon for its nucleus. He presented these ideas in the Discussion on Heavy Hydrogen at the Royal Society. For ordinary hydrogen, the lightest of the atoms, having a nuclues of a sole proton, he coined a related name: haplogen. (Greek: haploos, single; diploos, double.) In 1931, Harold Urey had discovered small quantities of atoms of heavy hydrogen wherever ordinary hydrogen occurred. The mass of its nucleus was double that of ordinary hydrogen. This hydrogen-2 is now called deuterium, as named by Urey (Greek: deuteros, second). Its nucleus, named a deuteron, has a neutron in addition to a proton.[ref: Proc. Roy. Soc. A, vol. 144 (1934)]
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