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3. Shakuntala Devi
India’s Shakuntala Devi is a “human computer.” Shakuntala Devi appeared in The Guinness Book of World Records in 1982. Devi was a prolific writer, and she wrote about the mathematics, astronomy, puzzles, and homosexuality. She published a book on homosexuality in India called The World of Homosexuals which is the first of its kind in Indian.