Mathematical Puzzle: IF 22+4...
Mathematical Puzzle: IF 22+4=24, 13+6=16 and 80+2=82 THEN 67+9=?Correct answers: 164
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Smallpox inoculations in U.S.In 1721, the first smallpox inoculations in America were given in Boston by Dr. Zabdiel Boylston when a smallpox epidemic struck Boston, Mass. Reverend Cotton Mather, who lived in Boston, had previously heard from a slave of the practice being used in Africa. Of all the doctors Mather had urged to try it, Zabdiel Boylston, was the first doctor courageous enough to use the procedure. |