Calculate axb
Look at the series (13, 41, a, 377, b, 3401, ...), determine the pattern, and calculate axb.Correct answers: 31
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Lung removal operationIn 1933, Dr. W. F. Reinhoff Jr. performed the first successful lung removal operation (extirpation of the lung) because of cancer in Baltimore, Maryland. [Rienhoff WF. Pneumonectomy: A preliminary report of the operative technique in two successful cases. Bulletin Johns Hopkins Hosp 1933;55:390-3.] |