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Can you find the numbers ABC...

Can you find the numbers ABCD so that the following calculation is proved? (ABCD x 4 = DCBA)

Correct answers: 50

The first user who solved this task is aysan saidie.

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Auguste-Henri Forel

Born 1 Sep 1848; died 27 Jul 1931 at age 82.Swiss neuroanatomist, psychiatrist, and entomologist known for his investigations of brain structure. Professor of Psychiatry at the University of Zürich and director of the world-famous Burghölzli Hospital, Forel was Adolf Meyer's teacher. Interested in ants from childhood, he became engrossed in the psychology of ants and contributed greatly to the study of their social instincts, leading to his magnum opus in 5 volumes of The Social World of the Ants (1921-23). He was the first to describe the phenomena of parabiosis and lestobiosis in ants.

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