Calculate A*B-C-D
[6373] Calculate A*B-C-D - Look at the series (7, 4, 5, 12, 45, D, 1329, 9300, 74397, C, B, A, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A*B-C-D! - #brainteasers #math - Correct Answers: 19 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate A*B-C-D

Look at the series (7, 4, 5, 12, 45, D, 1329, 9300, 74397, C, B, A, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A*B-C-D!
Correct answers: 19
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math
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Ben went on safari with his wi...

Ben went on safari with his wife and mother-in-law. One evening, while still deep in the jungle, the Mrs. awoke to find her mother gone. Rushing to her husband, she insisted on them both trying to find her mother.
Ben picked up his rifle, took a swig of whiskey, and started to look for her. In a clearing not far from the camp, they came upon a chilling sight: the mother-in-law was backed up against a thick, impenetrable bush, and a large male lion stood facing her.
The wife said, "What are we going to do?"
"Nothing," said Ben, "The lion got himself into this mess, let him get himself out of it."
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Elliott Coues

Died 25 Dec 1899 at age 57 (born 9 Sep 1842).American army surgeon and ornithologist whose Key to North American Birds (1872) was the first work of its kind to present a taxonomic classification of birds according to an artificial key and promoted the systematic study of North American. Beginning the U.S. army as a medical cadet during the Civil War (1862), he became an assistant surgeon (1864-81). His interest in the study of birds began while a boy. He met many naturalists at the Smithsonian Institution and published his first technical paper at age 19. As his army assignments took him to various locations throughout the West, he continued studying the bird life in each new area, and found new species. He also did valuable work in mammalogy and wrote a book, Fur-Bearing Animals (1877).«
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